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These treats are sweetened with ripe bananas and maple syrup for a delightful soft banana nut oatmeal cookie. They're made with just a few simple ingredients making them perfect for a snack or a lightly sweetened dessert.

If you need more inspiration for using up ripe bananas, I also have vegan banana bars with chocolate chips recipe. They taste like mini banana bread loaves!
How to Make Oatmeal Banana Nut Cookies
In a large bowl mash up two very ripe (spotted) bananas really well. The darker and more spotted the bananas are, the sweeter they are. Add the maple syrup and vanilla to the mashed bananas and stir to combine.

Then grind up ¾ cup of rolled oats (old-fashioned oats) in a blender or food processor for 15-20 seconds, or until it turns into a powder. The flour will help bind the oats and bananas together. In a separate bowl stir together the oat flour, the rest of the rolled oats, cinnamon, baking powder, salt, and chopped walnuts.

Now add the oat mixture to the banana mixture and stir to combine. The batter will be wet and sticky, so the best way I found is to treat them like drop cookies, then shape them on parchment paper or a silicone mat into cookie shapes. I recommend using a little water to get your hands damp to prevent sticking or a fork to lightly flatten the cookies.

Bake in a preheated oven at 350 F (180 C) for about 13-15 minutes. The tops should be firm to the touch. The banana nut oatmeal cookies will firm up on the outside but not brown so they’ll still be soft on the inside.
Tips
- Bake on a silicone mat or parchment paper to prevent sticking to a baking tray. The cookies do brown more on parchment paper versus a silicone mat.
- The batter will be sticky, scoop it out into mounds. The back of a fork works great to flatten the cookies then use your slightly damp hands to press down and shape them to resemble a cookie.
- The cookies don’t spread much.
- If your mashed bananas only measured out to ¾ cup, check the cookies for doneness at 13 minutes.
- If you prefer the cookies for breakfast and a little less sweet, leave out the maple syrup.
Do Frozen Bananas Work?
Thawed frozen bananas also work. To adjust the banana walnut oatmeal cookie recipe to use thawed frozen bananas, start by mashing them with the liquid they created when they thawed. The dough will probably be a little wetter since the thawed bananas have more liquid.
If the dough is too wet add a tablespoon of oat flour at a time to soak up excess liquid. The cookies will most likely need to be baked for a couple of minutes longer.
Storage
- The banana walnut oatmeal cookies can be stored in an air-tight container at room temperature for a few days, or stored in the refrigerator for up to a week.
- Baked cookies can be frozen, just thaw in the refrigerator before enjoying. To prevent the cookies from freezing together, first freeze them separated on a baking tray. Then when frozen pop them off the tray and into a freezer-safe container.
Substitutions
- Try pumpkin seeds or sunflower seeds to replace walnuts for a nut-free version.
- Add chocolate chips instead of walnuts.
- Substitute maple syrup for agave syrup.

More Vegan Desserts
- Vegan Banana Bars with Chocolate Chips (Oil-Free)
- Vegan Cookie Bars (Oil-Free)
- Chocolate Peanut Butter Bites
- Vegan Snickerdoodles
- Chocolate-covered cookie dough bites
As always, I hope you enjoy this recipe for vegan and gluten-free banana nut oatmeal cookies!
Print
Banana Nut Oatmeal Cookies (Vegan, Oil-Free)
- Total Time: 25 minutes
- Yield: 12 cookies 1x
- Diet: Vegan
Description
These treats are sweetened with ripe bananas and maple syrup for a delightful soft banana nut oatmeal cookie.
Ingredients
- 2 very ripe medium bananas mashed (about ¾-1 cup mashed)
- 3 tablespoons of maple syrup
- 1 teaspoon vanilla extract
- 2 cups rolled oats (divided (old-fashioned oats))
- 1 teaspoon ground cinnamon
- ½ teaspoon baking powder
- ¼ teaspoon salt
- ½ cup walnuts, chopped
Instructions
- Preheat the oven to 350 F (180 C) and line a baking tray with parchment paper or a silicone mat.
- Mash the two bananas really well in a large bowl.
- Then add the maple syrup and vanilla and mix to combine.
- Grind up ¾ cup of rolled oats into a fine powder in a blender or food processor, for about 10-20 seconds.
- Mix together the oat flour, the rest of the oats, cinnamon, baking powder, salt, and walnuts in a separate bowl.
- Add the dry ingredients into the banana mixture and stir to combine.
- The dough will be wet, scoop out about 2 tablespoons of batter per cookie onto a lined baking tray. Then use the back of a fork to lightly flatten the dough and use slightly damp hands to shape it into a cookie shape.
- Bake for about 13-15 minutes, or until the tops of the cookie are firm. If your mashed bananas only came to ¾ cup, check for doneness at 13 minutes. If using parchment paper, they brown more so check them for doneness around 13 minutes.
- Store your cookies for a couple of days covered at room temperature, up to a week covered in the fridge, or freeze them for later.
- Prep Time: 10 minutes
- Cook Time: 15 minutes
- Category: Breakfast, Dessert, Snack
- Method: bake
- Cuisine: American
Keywords: how to make breakfast cookies, banana oatmeal cookies, vegan oil free oatmeal cookies, banana nut oatmeal cookies
Jenny
The recipe turned out so delicious and it was nice I already had everything on hand. Thank you for the recipe!
★★★★★
Allie
I'm glad you enjoyed the cookie recipe!