These soft, chewy M&M Blonde Brownies are a fun snack any time of day. Try packing them into your kid's lunch boxes or snacking on them after school with a glass of milk.

Today I am slightly dragging a little. I have discovered that boys are much louder than girls. And by boys, I really mean grown men.
Last night my hubby had game night at our house. Seriously I think 5 grown men huddled around a board game are much louder than any group of women for sure. Loud voices and laughing do not make going to sleep very easy.
Usually they set up the game in the basement, but last night it was upstairs in the dining room. Of course, it was the room without carpet, so it just echoed through out the entire house. I did stay up for a bit doing some computer work in the office.
All I heard was laughing and talking about which army was going to destroy the rest. I finally waved the white flag and went to bed even though they were still going strong on their game at midnight. Thank goodness the closed door blocked some of the sound.

Next time I am baking more pans of M&M's Brownies and Peanut Butter Cup Cookies for them.
My thinking is that if they are busy shoving food in their mouth, they can't laugh and shout at the game plays.

Baking Blonde Brownies
These M&M's cookie bars are one of my family's favorite treats. I almost always under bake ours slightly because we like the soft, chewy, and sometimes gooey texture. 22 minutes is just the way we like them.
Feel free bake your bars a few minutes longer than that if you like blonde brownies that are a little more done. Just be careful and watch them closely as they bake. It is easy to over bake these bars.
These chewy blonde brownies WILL look undone when you pull them out of the oven, but they will set up as they cool. Just trust me on this! If you bake them too much, they will be hard when you cut into them later.
If you are making these cookie bars for a bake sale, I do recommend baking them the full 25 minutes. Gooey under baked treats are only good if you are eating them at home.

How to make M&M Blonde Brownies:
Make sure you set out your butter ahead of time. Soft room temperature butter is much easier to beat into the sugar.
Add the salt, vanilla, and eggs and beat the mixture again. Be careful not to over mix the batter at any point because that can make the top crunchy and crackly. Which is not really a bad thing, but it does change the texture slightly. I prefer the tops of my blonde brownies soft and chewy.
Stir in the baking powder and flour until you get a thick cookie dough.
Now comes for the fun part. It's time for adding your mix-ins. Obviously, this batch got loads of M&M candies. Feel free to use miniatures or regular M&M's. You could also do cookies, nuts, or sprinkles. Or a mixture of all the above.
Make sure you store the blondies in a sealed container. They will stay softer longer if you keep them from getting dried out. Of course, if your family is anything like mine, you will not have very many M&M Blonde Brownies to deal with.
Holiday Blonde Brownies
I love changing up the colors of the candies for different holidays. The rainbow of colors from the candies is so pretty when you cut into the M&M bars.
- Pink and red M&M's would make these so pretty for for Valentine's Day.
- Use mint M&M's for St. Patrick's Day.
- A bag of pastel M&M's would be perfect for Easter.
- Red, white, and blue M&M's would turn these into the best patriotic dessert.
- Use orange, brown, and white M&M's for a Halloween cookie bar.
- And of course, red, white, and green M&M's would be so pretty for Christmas.
See how easy it is to transform this easy recipe into a fun holiday dessert? You can also use any other candy in place of these M&M's. Reese's pieces are super yummy too!

More easy cookie bars that you may enjoy:
Gooey marshmallow and Reese's Pieces candies add a sweet goodness to these Marshmallow Reese's Blonde Brownies.
Lots of candy and pretzels makes a pan of these Caramel Pretzel Peanut Butter M&M Bars disappear in a hurry.
These Nutella M&M Bars are easy cookie bars that are made in one pan.
These soft and chewy chocolate filled Congo Bars are a great recipe to make the next time you have company over.
A pan of these S'mores Sugar Cookie Bars would never last long around me. I love a good chocolate, marshmallow, and graham treat!

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M&M Blonde Brownies
These easy M&M Blonde Brownies are loaded with candy goodness. A batch of these cookie bars never last very long in our house.
Ingredients
- Β½ cup unsalted butter, softened
- 2 cups packed brown sugar
- 2 large eggs
- 2 teaspoons vanilla extract
- 1 teaspoon salt
- 2 teaspoons baking powder
- 2 cups all purpose flour
- 1 Β½ cups M&M candies, divided
Instructions
- Preheat the oven to 350 degrees. Spray a 9x13 baking dish with nonstick spray.
- Beat the butter and brown sugar until creamy. Add the eggs and vanilla and beat again.
- Sift together the salt, baking powder, and flour. Slowly beat into the butter mixture. Stir in 1 cup of the M&M candies by hand.
- Spread the batter in the prepared dish. Sprinkle the top with the extra Β½ cup candies.
- Bake for 22-25 minutes. Let the cookie bars cool completely before cutting into squares. Store in a sealed container.
Notes
*They will seem under done and under baked when you pull them out. Let them sit on the counter for at least 2-3 hours before cutting into them
**If you are making them for a bake sale, bake them 25 minutes.
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Nutrition Information:
Yield: 24 Serving Size: 1Amount Per Serving: Calories: 202Total Fat: 7gSaturated Fat: 4gTrans Fat: 0gUnsaturated Fat: 2gCholesterol: 27mgSodium: 148mgCarbohydrates: 33gFiber: 1gSugar: 23gProtein: 2g
Nutrition facts are an estimate and are not guaranteed to be accurate. If you need special diet advice, please see a registered dietician.

*This post for M&M Blonde Brownies was first published on March 11, 2014. It has been updated and republished on February 15, 2019.
Nadine
Amazing. For anyone who said it was still raw, youβre probably not using the right size pan. Please check your measurements. These were fab!! Because I only had salted butter, I only used 1/2 tsp of salt instead. Turned out sooooo good at exactly 22 minutes! Donβt forget to let cool 2 hours π
Kristy
Forget my question about brown sugar....lol. I reread the recipe
Kristy
For the 2 cups of brown sugar. Is packed or not?
Jocelyn
Yes, it is packed. I'll make a note of that in the recipe. I hope you enjoy the bars.
Kristy
Thank you. I'm making this recipe now. I just know it's going to be wonderful.
Gina DeMarco
I just took these out of the oven now. The only thing different that I did, was use an 8x8" square pan, for 25 minutes, because the 13x9" looked a little too big for the amount of batter. I went to Walmart and bought the red, white and pink M&MS for valentine's day.
I can't wait to taste it!! (I have to wait the 4 hour's. I hope I can last!!
Jocelyn
I hope you enjoy them as much as we do. The only thing I'm nervous about is that if you used a smaller pan, it probably will be raw in the center even after cooling a few hours. The 25 minute bake time is for the 9x13 pan. Keep me posted on how they are!
Deanna
Not happy with this recipe. You should note that they have to sit 2 to 3 hours as part of the recipe...not as an afterthought.
Jocelyn
I'm sorry you weren't happy with it. It all depends on how you like your blonde brownies. Our boys love (and prefer) digging in to the hot, gooey brownies minutes after they come out of the oven. The note is just to let anyone making them that they are not under done.
Keira Meadowcroft
Saw this and thought they looked really nice and so I decided to give it a go. Followed the recipe and put the m&m blondes into the oven for the correct time and temperature. When I took them out of the oven they werenβt cooked on the inside, I put them on for another 10 minutes and when I cut it in half it was all mixture. I couldnβt put it in for any longer because the outside was starting to burn.
Jocelyn
Oh, no! Are you sure you used the right amount of butter? I've accidentally done that before and they don't bake right. The blonde brownies will look undone when you first take them out of the oven, but after they cool a few hours they set up fine. I don't recommend baking them any longer than 28 minutes because the sides get too crispy.
Jackie Jacoby
This recipe does not work. There is way too much brown sugar. I never should have followed through with it when I re-read the ingredients. Look at other blondie recipes- this is off.
Jocelyn
I'm sorry to disagree with you on this, but this recipe does work. I make it all the time for my family and bake sales and it always gets rave reviews!
Jessica
These were amazing! Thank you so much!
Rachael Yerkes
These are so fun! Love them!
Becky Hardin
These totally would not last 5 minutes in my house! A big favorite here!!! Yum!
Amy
I made these as the recipe states. I thought these were too sweet. Won't be making again.
Jocelyn
I'm so sorry you feel that way about these brownies. They are made with butter, sugar, and candy, so it's going to be sweet.
Lindsay
Iβm super disappointed. I was baking these for a fundraiser for a little boy with cancer, and I donβt think I can sell these ????. Iβm afraid people will think they are too under cooked.
Jocelyn
Oh, no I'm so sorry to hear that! Have they cooled completely? They do set up after cooling. We do tend to like ours slightly under baked because they are absolutely amazing that way. How long did you bake them for?
Kellie
Do I need to use real butter?
Jocelyn
I always use real butter. Margarine is made with water so it affects how things are baked. Plus, butter just makes everything taste better!
C Turner
I canβt seem to get these to work π they always end up rock solid on top and uncooked on the bottom. Any idea where I am going wrong? If I cook for less time the mixture is literally uncooked and runny underneath! FYI, they still rate yummy!
Jocelyn
Are you sure you are only using the right amount of butter? I only ask this because once I accidentally doubled the butter and ended up with the runniest center ever. My boys still thought it was amazing. LOL! Also how long do you beat the butter and sugar mixture before adding in the rest of the ingredients? I have found that beating that too long results in a crunchier top.
alexis
can you use baking soda in place of powder?
Jocelyn
Baking powder and baking soda are two different leavening ingredients. If you need to use baking soda, only use 2/3 of a teaspoon plus 3/4 teaspoon vinegar or lemon juice to activate it in the dough.
Sam
Are the measurements metric cups or us cups .
Jocelyn
All the recipes on our site are in US standard measures.
Bev Bird
Hi what flour do you use plain or self raising ?
Thankyou
Jocelyn
I use all purpose flour in all my recipes, unless it specifically says something else. I hope you enjoy the blondies!
Michelle
Plain! I used SR - epic fail ????
Heather
Made these using Bob's Red Mills 1 to 1 Baking Flour. Cooked for 30 minutes (gf cooking always takes a few extra minutes). Turned out awesome! Yummy!
Jocelyn
That's awesome to hear they turned out great with the other flour!
Christine
I made these with 1 to 1 flour and they were so good. Making them again this weekend. Its hard to find really good gluten free options so the under cooked part is perfect!!
Georgia Lennox
Looks yum and is yum
Nicole
I make these all the time. This is my number one go-to recipe for a quick, easy, delicious dessert. I brown the butter which gives it a little bit of a nutty flavor and I bake for no more than 20 minutes so they are soft and gooey. I find that any longer than 20 minutes in my oven and they come out hard. These go fast and I don't usually have much left!
Jocelyn
These are a favorite in our house too. They usually never last the day with 3 hungry teenagers grabbing at them. Brown butter is the bomb in these, so I'm glad to hear you do it too. I usually only bake ours about 22 minutes because I love them slightly underdone. It does all depend on ovens and how hot they run.
Britney
I'm sorry but this had to b the worst recipe ever. Came out as hard as a rock and I followed the ingredients to a T.
Jocelyn
I am so sorry to hear this didn't turn out for you. I have made this many times, and I have had lots of people who have made it and loved it too. Something must have gone wrong when you measured or baked it. All ovens do bake differently and also elevation plays a part in baking time, so that might have caused it to over bake.
Kristy
Mine came out a little hard too. Taste great though, and they ate every single one (the only person who noticed they were over-baked was me)! I believe this was all user error (AKA my fault!), because they didn't look or feel done, and I let them continue to bake after the directed time. I came back to re-read the recipe and see where above the recipe you say they will look under-baked and not to overcook...guess I need to quit skipping ahead to the recipe card! Great way to use up the copious amounts of M&M's we have leftover from after holiday sales, thanks for the recipe!
Jocelyn
I'm glad to hear you didn't have any leftovers! And I'm glad you saw the mention about not over baking them, even it was too late. I'll add a note in the actual recipe card for future bakers. I usually only bake ours for about 22 minutes because I love them under done. It all depends on your oven too...some ovens run hotter than others so they will cook faster.
Ruth
Made these for a bake sale and people went nuts over them. All the parents and staff wanted more, so I will make another batch as it is a week-long thing. Sold out straight away. Thank you for sharing the recipe!
Jocelyn
That is so great to hear how much everyone loved the bars. Thank you for sharing with me π
Kristy
Hi there. Two problems with this recipe. The batter was so stiff that I had to press it into the tin with a fork. It definitely needs some more liquid in it. In addition 24 minutes in the oven resulted in rock hard brownies. I've seen recipes where melted butter is used, so I am wondering if this might make the batter better?
Jocelyn
Well, something is definitely not right with your batter. How soft was your butter when you started and did you use both eggs? It should not have been so stiff that you had to press it in the pan with a fork, and 24 minutes should have resulted in still slightly under baked brownies. I have made these so many times over the years and have never had a problem with the recipe the way it is written.
Kathy Zimmerman
I just made these for tomorrow's bake sale at my son's school. It was baked at a minimum time, and it was overcooked. They looked ready in 15 minutes. Nevertheless, they taste amazing! I ate too many for a "taste test", and now I need to make another batch. My family will love the extras now. LOL
Jocelyn
I am so glad that they still tasted amazing! I wonder if your oven runs hotter than mine. Ours always take about 22-24 minutes to bake to a slightly under baked goodness.
Oh Happy Dane
Oh, how tempting they look!!! I'm getting hungry for fun now!!!
Katie
I just made the brownies, made to the exact measurements and times you said. Mine were WAY raw in the middle. so much that they would fall apart if i tried taking them out. I feel like the recipe is missing something or I did something wrong.
Jocelyn Brubaker
I am so sorry to hear that! But no, the recipe is exactly the way I make them every single time. How soon did you cut into the bars? They are gooey when they are warm and first out of the oven. I always undertake mine slightly, but at 24 minutes they are never raw coming out of my oven. All ovens are different though, so maybe just bake the next batch slightly longer. I hope that helps!
Tammy Herr
Wow! I just made these as a surprise treat for my kids after school. I took a piece as a sample and wow ! terrific. Will def make again!
N
I made these today with pLAnS of taking them to a church dinner tomorrow. My family convinced me to eat them today. I'm glad I did! Under asked is one thing. These were raw. Batter running everywhere when cut and they were completely cooled. It took an extra 10 minutes to get done to an edible consistency. They are delicious but I was very disappointed at the first attempt. Glad I cut it tonight or I would have been one embarrassed lady at church!
Jocelyn Brubaker
I am so sorry to hear that you had problems with these bars. I always bake mine for this time and temperature and they are never raw or runny.
Kristi
These are so delicious, and pretty too! Fun summer snack to make with the kids! Thanks!!!
Linnea
These are in the oven right now! Im soooooo excited to see how they turn out!!!:) Thank you for the recipe, and thanks to Pinterest for me being able to find it!
Jocelyn Brubaker
I am excited to hear what you think of them π
Linnea
Yay! They are soo yummy and so rich...I can't even eat one without craving milk...not a bad thing π . Thanks!
Debra @ Worth Cooking
These look incredible.
Made From Pinterest
I need all of this NOW!! Ha ha, this looks amazing!
Katie @ Addicted 2 DIY
These look delicious! Definitely pinning them for later! Stopping by from the Link Party Palooza:)
Jocelyn Brubaker
Thank you for stopping by Katie! π
Julianne @ Beyond Frosting
I really need to get in the "Blondie game", I have never made them!
Jocelyn Brubaker
Yes, you do! They are so so good! π
Layla @ Brunch Time Baker
You have an amazing blondies collection! These M&M blondies looks super delicious!
Ilona @ Ilona's Passion
Blonde Brownies.. amazing combination:)
Jocelyn Brubaker
Thanks Ilona! π
Emily ~So Domesticated~
What delicious looking brownies... Yum!
Jocelyn (Grandbaby Cakes)
These blondies look amazing and so chewy!
Jocelyn Brubaker
Thanks Jocelyn! π
Nancy P.@thebittersideofsweet
The best desserts I think come from when you just pull things out of the cabinet and go for it!
Karly
I love listening to grown men play games and shout and laugh. It's like a little glimpse of them as children. Big, hairy, overgrown children. π
Love these bars! Perfectly gooey centers!
Jocelyn Brubaker
Haha, so true! Thanks Karly!
Mir
The inside looks so perfect, all chewy and delicious. I want to reach through the photo and grab one!
Jocelyn Brubaker
Thanks Mir!! π
Chloe @ foodlikecake
Those look delicious! I love blondies and M&Ms!
katie
Umm yes please. It's not even 8am and I'm already craving brownies!!! Too funny about your hubby and his friends. At least they had a good time. I think your plan to bake more next time is a good one π
Jocelyn Brubaker
Thanks Katie! π
Tieghan
Always underbake for sure!! That is my favorite!
These look incredible! π
Elizabeth @ Confessions of a Baking Queen
My family is like yours, no container necessary when baking irresistible treats like these! These are one of those desserts that is so easy and simple but can't stop going back for more, well when I envision making these anyways!! LOL
Dorothy @ Crazy for Crust
Underbaked is the best!! I love this recipe Jocelyn, SO GOOD.
Jocelyn Brubaker
Thanks girl! π
Emily @ Life on Food
It always surprises me how loud my husband is with friends. Let me know if the more sweet treats trick works π
Jocelyn Brubaker
I will put it to the test next game night, and see how it goes! Haha!
annie
I want to sink my teeth into these right now! I'm having some serious sugar cravings today. They look so good and gooey.
Chels R.
I love everything about these and I want them so badly right now. I'm addicted to a blonde brownie!
Jocelyn Brubaker
Thanks Chels!!
Kelly @ Life Made Sweeter
These blonde brownies are fabulous Jocelyn! Perfect for occupying the grown men from making too much noise π Always yes to underbaked bars - love the pretty M&M's in these - pinning π
Mark Butler
I would love to see a blonde made with Sugar Babies candies and toasted pecans! Serve this with vanilla ice cream with caramel sauce! Decadent!
Jocelyn Brubaker
That sounds just lovely!!
Shannon @ Bake.Frost.Repeat
These bars look totally amazing! I think I will make some of these with the Easter M&Ms for an Easter treat!
Jess @ On Sugar Mountain
UNLESS they laugh and shout WITH brownies in their mouths, and then that could be problematic. I only say so cuz I know food has never stopped me from being awful and talking. >_< That's why I can't have nice things like these awesome brownies LOL.
Jocelyn Brubaker
Haha! Thanks Jess!
Lisa @ Garnish with Lemon
Isn't it funny how not getting enough sleep now makes us drag so much? But when the kids were little we were so used to it or maybe just delirious? I'm totally the same way! And I too love my blondies under baked!
Chelsea @ Gal on a Mission
I cannot agree with you anymore - grown men are a lot louder than women! I swear they are.
I LOVE the idea of making more of these awesome looking blondies to keep them quiet.
Looks great, Jocelyn! Pinned π
Jocelyn Brubaker
Haha, thanks Chelsea! π
Brenda @ SweetSimpleStuff
I agree ... brownies, blondies or any bars are the best when under cooked! Yours look wonderful ... what a way to clean out the cupboard π
You are right ... boys are noisier than girls!
LuAnn Braley
You need to have someone invent a replicator that can scan a picture of your desserts and make them appear when you open the device door. :O)
Jocelyn Brubaker
Now that sounds like a fun invention π
Alicia
Can you tell me how many this makes? Thank you!
Jocelyn
Well, that all depends on how big you cut it into squares. Sometimes I get 15 (if I'm cutting them bigger for a bake sale) and sometimes I get 24 (if I'm cutting them for us or to take to a party). I hope that helps and you enjoy the blonde brownies!
Carly
I made these today with my niece and they were so yummy! Thanks for such a great recipe!
Darya
Your recipes came out too dry and too sweet definitely need more butter less sugar
Jocelyn
I'm so sorry to hear you didn't like them. I'm wondering if you over baked the blondies. These are definitely not a dry brownie at all. We usually always underbake them so they are gooey and delicious.
Colm
I second this, the recipe appears wrong to me. 2 cups of brown sugar is way too much. Iβve ended up with a gooey, over sweet mess now.
Jocelyn
Actually, the recipe is correct as written. I make these blonde brownies all the time using that much sugar and they always turn out.