Peanut Butter Banana Oatmeal Cookies

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

The downfall 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 to enjoy lots of smoothies and peanut butter banana ice cream for the next month.

Since I didn't want to freeze anymore, I had to find a way to use the rest this week. First, I made some butterscotch banana muffins and some 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 I bought at Goodwill for inspiration.

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

You guys! These cookies were amazing.  They reminded me of this Peanut Butter Banana Cup Bread. Banana bread in cookie form is never a bad idea!!!

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 banana chocolate chip cookies in our house for the week.

Ingredients Needed

• 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 Banana Oatmeal Cookies

1. Preheat your oven and set out your cookie sheets.
2. Beat the butter, peanut butter, and sugar 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 Reese's peanut butter cup mix.  If you want a few ingredients on the top of the cookies, reserve ½ 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.

Recipe Substitutions

• Peanut Butter - We usually buy creamy peanut butter but feel free to use crunchy peanut butter 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.
• Chocolate Chips - Typically, I 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 instead of Reese's.  M&M's or chopped-up Snickers bars would be delicious, too. Any candy you think tastes good with peanut butter and banana will work.

Do I need to refrigerate the cookie dough before baking?

No, you can bake these cookies when 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 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. Make sure you use real butter in your cookie recipes.

Overbaking can also cause a crumbly cookie. Ensure your oven is baking at the right temperature, and take the pan out when the timer goes off.

Can you freeze banana chocolate chip cookies?

This peanut butter banana cookie recipe freezes great. Place the cookies in a single layer on a tray and freeze for an hour. Transfer to a freezer-safe container where they can be stacked and frozen for up to 3 months.

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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This post was first published in April 2010. The photos and post were updated and republished in May 2019.