Skip to Content

3-Ingredient Oatmeal Cookies

Easy 3-Ingredient Oatmeal Cookies that take right around 15 minutes to make from start to finish! This simple healthier cookie recipe is vegan, gluten-free, flourless, dairy-free and contains no added sweetener.

3-Ingredient Oatmeal Cookies with chocolate chips - a healthier cookie recipe with no added sweetener. Vegan, gluten-free, dairy-free

Have you tried one of my banana-sweetened treats yet?

My 3-Ingredient Chocolate Banana Cookies, 4-Ingredient Healthy Samoa Cookies, Healthy Apple Muffins and 4-Ingredient Flourless Healthy Brownies and now this recipe for 3-Ingredient Oatmeal Cookies all have one thing in common.

They are sweetened entirely with bananas!

The way I see it, this is an excellent baking project for kids as there are so few ingredients and minimal cleanup. Also an awesome recipe for those of us who simply love a healthier sweet treat.

Easy 3-Ingredient Oatmeal Cookies that take right around 15 minutes to make from start to finish! This simple healthier cookie recipe is vegan, gluten-free, flourless, dairy-free and contains no added sweetener.

I’m constantly looking for ways to get my sweet fix without going overboard on sugar, and I’ve found fruit, certain vegetables (root vegetables and winter squash in particular), and various ingredients like almond flour and unsweetened coconut to be useful in generating sweet flavor without the need for excess sugar.

So what we’re making here is a refined sugar-free, egg-free, flourless, gluten-free vegan cookie using three simple ingredients.

Of course, we can easily use more than three ingredients in order to change up the flavor profile and make them even tastier (more on that later).

At a minimum, all you need is ripe banana, almond butter (or peanut butter) and rolled oats.

Let’s discuss these ingredients in detail!

Easy 3-Ingredient Vegan Oatmeal Cookies - gluten-free, refined sugar-free, dairy-free, quick and easy to make!

Ingredients for 3-Ingredient Oatmeal Cookies:

Ripe Bananas: Be sure you use very ripe bananas that have plenty of brown spots for the best result. The riper the banana, the sweeter it will be, which will ensure these cookies turn out nice and tasty.

As previously mentioned, the banana serves as the sweetener of the cookies and also provides moisture. Can you taste the banana? Yes, absolutely! The banana shines through very well, which is great for those of us who love them. If you don’t like bananas, you won’t like these cookies!

Almond Butter or Peanut Butter: Unsweetened almond butter or peanut butter is the glue that holds these cookies together, eliminating the need for eggs or a leavening agent. It also adds delicious flavor! 

If you’re fine with the added sugar, use sweetened peanut butter or almond butter to ramp up the sweetness of the cookies. If you prefer keeping the cookies refined sugar-free, go with an unsweetened nut butter.

Rolled Oats: Rolled oats give that amazing earthy nutty flavor to the cookies with that oaty texture. I use gluten-free oats, but you can use regular oats if you aren’t concerned about the gluten content.

For a recipe for banana cookies without oats, make my 3-Ingredient Nutty Banana Cookies, which are grain-free.

Optional Additions: 

  • Chocolate Chips
  • Vanilla Extract
  • Ground Cinnamon
  • Sea Salt

These additions, while certainly not mandatory, level up the deliciousness of the cookies quite a bit! I personally like adding them all. 

The chocolate chips provide delectable little goo pockets, the vanilla extract provides nice warming flavor, and the ground cinnamon gives the cookies a richness with that iconic oatmeal cookie vibe. Sea salt enhances all of the flavors and makes the cookies taste sweeter without the need for additional sweetener.

If you’re looking to keep the cookies low in sugar, skip the chocolate chips!

3-Ingredient Vegan Oatmeal Cookies - flourless, gluten-free, oil-free, dairy-free, egg-free, no added sweetener

Let’s bake a batch!

How to Make 3-Ingredient Oatmeal Cookies:

Preheat the oven to 350 degrees Fahrenheit and line a large baking sheet with parchment paper (or spray it with cooking oil).

Mash the banana into a mixing bowl until most of the chunks are out (it can be a little chunky just not overly chunky).

Mash the bananas and mix in the peanut butter and oats

Add the peanut butter and oats and mix everything together until a sticky dough forms.

If you’d like, add chocolate chips.

Add chocolate chips to the oatmeal cookies

Easy 3-ingredient chocolate chip oatmeal cookie dough.

Use a spoon to drop the cookie dough onto the baking sheet, creating any size of cookie you like (note very small cookies will require less bake time). The cookies won’t spread, so form them into the shape you want them to be in – I stick with round mounds.

Drop spoonfuls of cookie dough on a baking sheet

Bake the cookies for 10 to 12 minutes, or until they are slightly golden-brown around the edges.

Allow the cookies to cool for at least 15 minutes before using a spatula to remove them from the baking sheet to serve. 

3-Ingredient Oatmeal Cookies with chocolate chips - gluten-free, egg-free, refined sugar-free, healthy

That’s it! A 3-ingredient cookie recipe that anyone can make and everyone can enjoy.

Bake them for a cleaner option any time the desire strikes!

More Delicious Gluten-Free Cookie Recipes:

Banana + oatmeal + almond butter OH MY!

If you make these cookies, feel free to share a photo on Instagram and tag @The.Roasted.Root!

3-Ingredient Oatmeal Cookies with chocolate chips - a healthier cookie recipe with no added sweetener. Vegan, gluten-free, dairy-free

3-Ingredient Oatmeal Cookies

Yield: 10 Large or 16 Small Cookies
Prep Time: 5 minutes
Cook Time: 10 minutes
Total Time: 15 minutes

A 3-ingredient cookie recipe that anyone can make and everyone can enjoy. Bake them for a cleaner option any time the desire strikes!

Ingredients

  • 3 large ripe bananas, mashed (1 ½ cups)
  • ½ cup almond butter or peanut butter*
  • 2 cups rolled oats**

Optional Additions:

  • ⅓ to ½ cup chocolate chips
  • 1 tsp vanilla extract
  • 1 pinch sea salt

Instructions

  1. Preheat the oven to 350 degrees Fahrenheit and line a large baking sheet with parchment paper (or spray it with cooking oil).
  2. Mash the banana into a mixing bowl until most of the chunks are out (it can be a little chunky just not overly chunky).
  3. Add the peanut butter and oats and mix everything together until a sticky dough forms.
  4. Use a spoon to drop the cookie dough onto the baking sheet, creating any size of cookie you like (note very small cookies will require less bake time). The cookies won’t spread, so form them into the shape you want them to be in - I stick with round mounds.
  5. Bake the cookies for 10 to 12 minutes, or until they are slightly golden-brown around the edges.
  6. Allow the cookies to cool for at least 15 minutes before using a spatula to remove them from the baking sheet to serve.

Notes

*For sweeter cookies, use sweetened nut butter. For refined sugar-free cookies, go with an unsweetened nut butter.

**I use gluten-free oats

Nutrition Information
Yield 10 Serving Size 1 of 10
Amount Per Serving Calories 138Total Fat 8gCarbohydrates 16gNet Carbohydrates 13gFiber 3gSugar 5gProtein 4g
3-Ingredient Vegan Oatmeal Cookies - an egg-free, dairy-free, refined sugar-free healthier cookie recipe that takes 15 minutes to make!

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Angela

Friday 17th of June 2022

Great recipe! I made half the recipe with peanut butter and half with applesauce (instead of the peanut butter). Applesauce cookies were softer but yummy. Added dried cranberries to the applesauce variation with some walnuts and a 1/4 cup of shredded coconut! Baked at 350 but for a longer period of time (about 25 minutes).

Julia

Monday 20th of June 2022

OOOOH, all of that sounds amazing! Thank you for sharing, Angela! xoxox

Maxine

Monday 18th of April 2022

These cookies have 5 grams of sugar for 1 cookie. Is that a lot for diabetics.

Julia

Monday 18th of April 2022

Hi Maxine,

I don't have a medical background so I'm not qualified to make that judgement. Can you ask your doctor their opinion? I know some folks with diabetes can eat a small amount of sugar or carbs and be okay, whereas others need to be very cautious. I assume as long as you aren't eating a great deal of additional carbs or sugar the rest of the day it would be fine, but I think it depends on your personal medical situation and what else you'd be eating. I hope that helps!! xo

Cmiska

Sunday 6th of February 2022

Hi...I have to eat a low fat diet because of a health issue. If I substituted half of the almond butter with applesauce, would that still work to bind it? Or could I sub half the nut butter with something else? Thank you!

Julia

Monday 7th of February 2022

Hi there!

Ooh, that's a great question. I'm truly not sure, as I've never tested it myself. It may work by subbing half of the almond butter for applesauce, or you could try to use more mashed banana as well. My only concern would be that they won't hold together very well, but it may be worth the shot. If the "dough" seems too crumbly when you make it, you could try making bars instead of cookies. Let me know if you try it!

Denice

Tuesday 21st of December 2021

As usual, you have the best recipes! I was craving peanut butter and chocolate and wanted a gf cookie! And this is perfect with hot cocoa for the upcoming snowstorm here in Tahoe!

Julia

Tuesday 21st of December 2021

Aww Thank you, Denice!! I'm so happy you enjoy them. My partner seriously couldn't stop eating them! Love the idea of having them with hot cocoa and watching the snowfall. Hope you have a lovely Christmas, and stay warm! xoxo

Sarz

Tuesday 14th of December 2021

What could I substitute banana with as I have an intolerance to them?

Julia

Wednesday 15th of December 2021

Hi Sarz,

The banana is used as the sweetener for the cookies so I'm not sure there is a good substitute. You could try using sweetened nut butter (replace the banana with more nut butter) and add a touch of pure maple syrup if they aren't sweet enough.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Skip to Recipe