These Peanut Butter Oatmeal Banana Cookies are chewy, delicious, and loaded with peanut butter candies. Peanut butter lovers will go crazy for this easy cookie recipe.
 

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The down fall to buying too many bananas at a time, is that we end with quite a few over ripe bananas sitting on the counter for days!

I have already frozen quite a few in the past few weeks, so we are set up to enjoy lots of smoothies and Peanut Butter Banana Ice Cream for the next month.

Since I really didn’t want to freeze anymore, I had to find a way to use the rest up this week. First, I made some of these Butterscotch Banana Muffins and some of these Banana S’mores Muffins.

But I still had a few spotty bananas staring back at me from the counter. So, I started flipping through some of the old church cookbooks that I bought at Goodwill for some inspiration.

There I found a recipe for peanut butter oatmeal cookies. Since we all loved these Cinnamon Banana Oatmeal Cookies, I had a feeling everyone would love these too.

Of course, you know how much I like to embellish recipes, right?  

First, I added some bananas, chocolate chips, and peanut butter cups, and then messed with the flour and oatmeal ratios, and that’s how we ended up with peanut butter oatmeal banana cookies in our house for the week.

Ingredients for Peanut Butter Oatmeal Banana Cookies:

• Butter
• Peanut Butter
• Granulated and Brown Sugar
• Eggs
• Vanilla
• Bananas
• Baking Powder, Baking Soda, and Salt
• Flour
• Quick Oats
• Chocolate Chips
• Reese’s Baking Cups and Pieces

Keep scrolling for the full printable recipe. These oatmeal cookies turned out so soft and delicious! They are now one of our favorite cookies.

How to make Peanut Butter Oatmeal Banana Cookies:

1. Preheat your oven and set out your cookie sheets.
2. Beat the butter, peanut butter, and sugars until creamy.
3. Mash your ripe bananas with a fork.  The riper the bananas are the better. Add the bananas, eggs, and vanilla to the butter mixture.
4. Stir together the dry ingredients and slowly mix them into the wet ingredients.
5. Add the chocolate chips and the bag of peanut butter cup mix.  If you want a few ingredients to be on the top of the cookies, reserve 1/2 cup of the baking mix.
6. Drop the cookie dough onto the cookie sheets in 36 piles. Press the reserved peanut butter cups and pieces onto the top of the dough. Bake for 10 minutes.
7. Let the cookies cool on the pan for a few minutes before gently removing them and placing them on parchment or wax paper.
8. Store the cookies in a tightly sealed container.  They will stay soft and delicious this way.

Substitutions:

Peanut Butter – we usually just buy creamy peanut butter, but feel free to use crunchy if you like peanuts in your cookies. Or make them with almond butter, Biscoff or Nutella.

Oats – I like to use quick oats in cookies, but you can use rolled or old fashioned oatmeal too.

Chocolate Chips – Typically, I just buy dark chocolate chips for all our baking because that’s what we like, but you can use milk chocolate, white chips, peanut butter chips, or a mixture of all of them.

Reese’s Candies – You can use any candy you like in place of the Reese’s.  M&M’s or chopped up Snickers bars would be delicious too. Basically any candy that you think will taste good with peanut butter and banana will work.

Do I need to refrigerate the cookie dough before baking?

No, you can bake these cookies as soon as the dough is ready.  Of course, if you want to make it ahead of time, you can refrigerate the dough.  Just remove the container from the fridge at least 30 minutes before baking.

Can I use natural peanut butter in cookies?

There is a higher oil content in natural peanut butter. This could result in your natural peanut butter cookies spreading out and being thinner than cookies made with regular peanut butter.

Why are my peanut butter cookies dry and crumbly?

Butter substitutes or margarine contain water and can cause a crumbly texture in cookies because they lack enough fat in them. Make sure you use real butter in your cookie recipes.

Over baking can also cause a crumbly cookie. Make sure your oven is baking at the right temperature and take the pan out when the timer goes off.

Other peanut butter cookie recipes:

Reese’s Peanut Butter Pudding Cookies

Peanut Butter Cup Cookies

Peanut Butter Fluffernutter Cookies

Peanut Butter and Jelly Cookies

Peanut Butter Reese’s Cookies

M&M Peanut Butter Pudding Cookies

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Peanut Butter Oatmeal Banana Cookies

Yield: 36 cookies

Prep Time: 15 minutes

Cook Time: 10 minutes

Total Time: 25 minutes

Print

Ingredients

• 3/4 cup unsalted butter, softened
• 1/2 cup creamy peanut butter
• 1 cup sugar
• 1/2 cup packed brown sugar
• 2 eggs
• 1 teaspoon vanilla extract
• 2 large ripe bananas, mashed (about 1 cup)
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1 1/4 cups flour
• 2 cups quick oats
• 1 cup chocolate chips
• 1 - 8.5 ounce bag Reese's Baking Cups and Pieces (cut the pb cups in half)*

Instructions

1. Preheat oven to 375 degrees. Line a cookie pan with a Silpat or use an un-greased air bake cookie sheet.
2. In mixing bowl, beat butter, peanut butter, and both sugars until creamy. Add the eggs vanilla, and mashed banana and beat again.
3. Stir together the baking powder, baking soda, salt, flour, and oats. Slowly mix this into the butter mixture.
4. Gently stir in the chocolate chips and the Reese's mix. (I like to keep some of this out and press it into the tops of the dough before baking.)
5. Drop by spoonful onto the baking sheet. Bake for 10 min or until edges are light brown.
6. Remove from the oven and let cool on the pan for 2-3 minutes, then gently remove and place on a wire rack to cool completely. Store in a tightly sealed container.

Notes

*The bag of Reese's Baking Cups and Pieces is found in the baking aisle and has mini peanut butter cups and mini Reese's Pieces in it. If you can't find this particular item, buy the two things individually and use 1/2 cup of each.

Recommended Products

As an Amazon Associate and member of other affiliate programs, I earn from qualifying purchases.

• 
  Pyrex Glass Mixing Bowl Set (3-Piece)
• 
  Silpat Premium Non-Stick Silicone Baking Mat, Half Sheet Size, 11-5/8" x 16-1/2"
• 
  Nordic Ware Natural Aluminum Commercial Baker's Half Sheet (2 Pack), Silver

Nutrition Information:

Yield: 36 Serving Size: 1
Amount Per Serving: Calories: 227Total Fat: 13gSaturated Fat: 5gTrans Fat: 0gUnsaturated Fat: 7gCholesterol: 21mgSodium: 151mgCarbohydrates: 25gFiber: 2gSugar: 16gProtein: 5g

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*The post for Peanut Butter Oatmeal Banana Cookies was first published on April 7, 2010. The photos and post have been updated and republished on May 28, 2019.