3 Ingredient Banana Oat Cookies

10 Pieces
20 min

Peanut Butter, Banana and Oatmeal are all you need for these chewy 3 Ingredient Banana Oat Cookies. They’re gluten-free, vegan, just overall healthy, and extremely easy to put together. Perfect for a healthy dessert, on-the-go snack or breakfast.

They’re not only soft and chewy, but absolutely delicious! I might just bulk-bake these again and pop them in the freezer so I have something when the cravings hit.

Thinking back, this is probably the first time I made a recipe without going through my endless to-do list or seeing any Instagram post that I couldn't help but try out. The source of inspiration for this were the PB Powder Oatmeal Cookies that I made recently.

I spent ages trying to find a recipe to base that off of, and everything that popped up had mashed bananas in it. But I thought mashed bananas + oatmeal deserved their own cookie recipe.

3 Ingredient Banana Oat Cookies
Recipe details
  • 10  Pieces
  • Prep time: 5 Minutes Cook time: 15 Minutes Total time: 20 min
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  • 2 medium Bananas (1 cup mashed, 240g)
  • 1½ cup Instant/Rolled Oats (135g)
  • ⅓ cup Peanut Butter (85g)
Optional Mix-ins:
  • Chocolate Chips
  • Nuts Raisins/Dried
  • Cranberries

Preheat oven to 350°F and line a baking sheet with parchment paper/lightly grease.
In a bowl, mash the banana with the back of a fork until smooth.
Add oats and peanut butter and mix well.
Optional: Fold in about 3 Tbsp of any mix-ins if using.
Scoop out about 2 Tbsp mixture at a time, and place on a cookie sheet.
Flatten or shape as desired (cookies will not spread).
Bake for 15 min or until golden brown.
Allow to cool about 10 minutes, remove from pan and enjoy!
  • Make sure you flatten or shape the cookies on the sheet. They will keep shape and not spread when baking.
  • Storage: Cool cookies completely before storing. Room temperature: 3-5 days in an airtight container. Freezer: 3 months in an airtight, freezer-safe bag. Thaw overnight in the refrigerator before eating.
Haylee Jane Monteiro
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  • Kathleen Kathleen on Nov 06, 2020

    Question: will this work with regular rolled oats?

    • See 2 previous
    • Rosalee Rosalee on Mar 28, 2022

      you can put regular oats in a coffee grinder and make the same consistency

  • Maxine Marcella Maxine Marcella on Jan 22, 2021

    Can you go without peanut butter?

    • See 5 previous
    • Donna M Oliver Donna M Oliver on Aug 27, 2022

      I’ve made this recipe with just bananas and instant sugar free apple/cinnamon oatmeal and chopped nuts - It works. I’ve made it many times