Name: 3 Ingredient Banana Oatmeal Cookies
Prep time: 10 min
Cook time: 12 min
Ingredients: ½ cup banana (mashed and ripened (about 1 medium banana)); ¾ cup rolled oats; 3 tablespoons add-ins of choice (chocolate chips, seeds, etc.)

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Soft ‘n moist banana oatmeal cookies made with just 3 ingredients, these cookies are healthy, easy to make, and packed with your favorite add-ins! The best 3 ingredient banana oatmeal cookies.

3 ingredient banana oatmeal cookies on a cooling rack

Super Easy 3 Ingredient Banana Oatmeal Cookies!

Here at Beaming Baker, you know we absolutely love easy, 3 ingredient recipes. See: whipped shortbread cookies, peanut butter granola bars, and no bake cookies. Today’s recipe is no exception. These 3 ingredient banana oatmeal cookies are unbelievably easy to make, prepared in no time at all, and make for the best snack + treat!

the 3 Ingredients for banana oatmeal cookies laid out on a table

A 3 Ingredient Banana Oatmeal Cookies Recipe!

These soft and moist 3 ingredient banana oatmeal cookies truly make bake time and snack time super easy! For an even easier treat, try my peanut butter granola bars.

Bananas – use the ripest bananas for the sweetest cookies.
Oats – I love using rolled oats for a chewy, satisfying texture.
Add-ins – chocolate chips are my go-to, but you can use seeds, dried fruit, and more.

Hot Tips for The Best Banana Oatmeal Cookies

Make the day you want to eat them, or freeze right after cooling: these banana oatmeal cookies are best on day 1, or keep very well in the freezer.
Don’t increase the amount of add-ins. I included just the right amount so the cookies don’t fall apart before or after baking.
Use truly ripe bananas. For sweet, big banana flavor, use the ripened, spotty bananas.
Serve with peanut butter… for a satisfying snack. The combo is delicious.
Don’t make the dough in advance. Once the bananas as mashed, they’ll brown very quickly. It’s best to bake this cookie dough immediately.

3 ingredient banana oatmeal cookies on a black and white backdrop

How to Make 3 Ingredient Oat Banana Cookies

These 3 ingredient oat banana cookies come together in no time at all. The result is soft and moist cookies made with simple, guilt-free ingredients.

First, preheat the oven to 350°F. Then grab a nonstick cookie sheet, or line a baking sheet with parchment paper.

Second, mash the banana in a medium mixing bowl.

Third, add in oats and add-ins. Stir and fold until thickened into a banana oatmeal cookie dough.

Using a cookie scoop, scoop and drop balls of dough onto the prepared cookie sheet. Flatten with a fork.

Bake for about 12 minutes. Cool, and enjoy the best 3 ingredient banana oatmeal cookies!

this recipe shown fully baked and cooling on a rack

Storing & Freezing

Funnily enough, storing these 3 ingredient banana oatmeal cookies at room temperature is actually worse than storing them in the freezer.

To Refrigerate: Once cooled, store banana oatmeal cookies in the refrigerator for 1-3 days, maximum. Ripe banana baked goods are best on the first day.

To Freeze (recommended): If you’re not enjoying these delicious 3 ingredient banana oatmeal cookies on the first day, I recommend freezing them. Keep for 1-3 months in the freezer, just like these healthy peanut butter oatmeal cookies.

Angled treats with oats, banana pieces, and add-ins

Tools You Need

Bake Me Up Before You Dough Dough…

Don’t leave me hanging here like a yo-yo! Alright, I’ll admit, these 3 ingredient banana oat cookies have got me singing! I hope they do the same for you. 🙂 Thank you for stopping by and sharing in these sweetly baked adventures with me and your loved ones. ‘Til the next one…

Sending you all my love and maybe even a dove, xo Demeter ❤️

square photo of banana oatmeal cookies on a cooling rack

Servings: cookies