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Peanut Butter Banana Oatmeal Cookies

5 from 1 vote

These easy and kid-approved Peanut Butter Banana Oatmeal Cookies aren’t just a delicious snack or dessert treat, they’re also healthy enough to be a great grab and go breakfast option!

Just like with my oat-less Peanut Butter Banana Cookies made with almond flour, this healthy cookie recipe uses no butter or flour.

Stack of five oatmeal chocolate chip cookies with a bite taken from the top one, on a light textured surface. Background includes a bowl of chocolate chips and a glass of milk.

Peanut Butter Banana Oatmeal Cookies

If you’re looking for soft and chewy Peanut Butter Banana Oatmeal cookies that taste great, are kid-approved, and still made with wholesome ingredients, then you’ve come to the right place. 

They’re the perfect after-school snack option, but they also make a great breakfast item paired with any of my sublime smoothie bowl recipes or just a side of fruit.

These awesome oatmeal cookies are made without flour or butter and are naturally gluten and dairy-free, but like my Protein Oatmeal Cookies and Nutella Oatmeal Cookies they disappear faster than I can make them!

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Ingredients

Overhead view of baking ingredients on a light surface: bananas, peanut butter, oats, chocolate chips, brown sugar, an egg, salt, vanilla extract, and baking soda. Each item is labeled.
  • Mashed banana - Bananas should be very ripe, brown spots are good!
  • Peanut butter - I like all natural peanut butter because it doesn't have any extra added oils or sugar. If your peanut butter “splits”, mix it really well with a fork before adding to the recipe.
  • Brown sugar - You can use light or dark brown sugar, but dark brown gives the cookies a chewier texture.
  • Quick oats or old fashioned oats - quick oats work best because the cookies turn out soft. If you want more texture, use old fashioned rolled oats. Stay away from instant or steel cut oats for this recipe. Check the package to ensure gluten-free if needed.
  • Vanilla extract - use good quality extract for best tasting results
  • Salt 
  • Egg - I use large, fresh eggs in all my recipes. See the tips section for subs if you are allergic or avoid eggs.
  • Baking soda - note that this is not the same as baking powder

See recipe card for exact quantities.

How to make banana peanut butter oatmeal cookies

A peeled banana split in half sits in a clear glass bowl on a speckled gray surface.
  1. Step 1: Mash the ripe bananas in a medium or large bowl. I like to use a potato masher.
A clear glass bowl contains mashed bananas on a textured grey surface. The bananas are soft and slightly chunky, with some darker specks visible, suggesting ripeness.
  1. Step 2: Make sure you have ½ cup of mashed banana.
A glass bowl containing peanut butter, mashed banana, an egg, brown sugar, salt, and vanilla extract. The ingredients are partially mixed, ready for baking preparation.
  1. Step 3: Add the peanut butter, egg, brown sugar, vanilla, baking soda and salt.
A clear glass bowl contains a thick, brown batter being mixed with a fork. The batter has a slightly lumpy texture and is set on a gray, textured surface.
  1. Step 4: Mix with a fork until mostly smooth.
A clear glass bowl containing a mixture of oats, chocolate chips, and a brown liquid being poured. The ingredients are partially mixed on a gray textured surface.
  1. Step 3: Add oats and chocolate chips and stir to combine.
Glass bowl containing a mixture of oats, peanut butter, and chocolate chips, mixed into a thick batter with a visible metal spoon. The textured grey surface beneath the bowl provides a neutral backdrop.
  1. Step 4: Cover and place in the fridge for at least 30 minutes.
Eight no-bake cookies with oats and chocolate chips on parchment paper arranged on a baking sheet.
  1. Step 3: use a cookie scoop to drop the cookie dough balls onto the prepared baking sheet. Flatten each cookie with the back of a spoon to about ¼ inch thick.
A baking sheet with seven homemade cookies featuring oatmeal and chocolate chips. They are placed on parchment paper, evenly spaced. The cookies have a rustic, slightly uneven appearance and a golden-brown color.
  1. Step 4: Bake the cookies for 12-15 minutes in the preheated oven. The cookies will be soft but shouldn't be wet on top. Don't overbake!

Hint: leave a useful hint here, like let the grill run for 4-5 minutes to burn off any remnants, then clean it. I like to use this bristle-free barbecue brush (affiliate link) for cleaning the grill.

Expert tip:

It's important to measure out banana after they have been mashed for best results. If your bananas are medium sized, you will need about 1 and a half. Freeze the other half to make a delicious smoothie later 

Close-up of oatmeal banana cookies with chocolate chips arranged on a baking sheet. The cookies are golden brown with visible chunks of banana and chocolate, showcasing a textured surface.

Storage Tips

Make sure the cookies are completely cooled and dry before transferring them to a container to prevent them from sticking together. 

Store these cookies in a cookie jar or an airtight container at room temperature for up to 3 days

You can freeze these cookies for up to 3 months! To prevent them from sticking during storage, wrap each cookie in plastic wrap or freeze them on a cookie sheet until solid and then transfer to a freezer safe bag. Allow the cookies to thaw completely at room temperature before eating.

Serving suggestions

These banana oatmeal peanut butter cookies are great on their own, but if you want to make them part of a more complete breakfast, then I highly suggest eating them with any of my smoothies and smoothie bowls. I’ve included a few of my favorites here for inspiration.

A pile of oatmeal chocolate chip cookies is displayed on a light surface. The cookies are golden brown with visible oats and chocolate chips scattered throughout. A small white bowl filled with chocolate chips is partially visible on the right side.

Recipe Tips & Tricks

  • Use ripe or overripe bananas (brown spots are your friend!). Overripe bananas aren’t just easier to mash and combine with other ingredients, they’re also naturally sweeter this way.
  • Use an All natural peanut butter. It doesn't have any extra added oils or sugar. The only ingredients should be peanuts and salt. If your peanut butter “splits” (you'll see a layer of liquid fat on top), mix it really well with a fork before adding to the recipe. 
  • I start the dough with 1 cup and 2 tablespoons of oats because my kids prefer softer cookies. If you prefer firmer cookies or if your brand of peanut butter is drippy, you can increase the amount of oats called for in the recipe.
  • You can use another nut butter but note that the flavor will change slightly depending if you use something like almond butter or cashew butter.
  • Use a flax egg or egg substitute to make this recipe vegan friendly.
  • You can use dark chocolate chips or crushed unsalted peanuts, pecans, or walnuts for a great texture addition. You can also add raisins or dried cranberries to the mix
  • These cookies don't spread at all when baking, so flatten them to your preferred thickness before baking. 
  • Don't over bake the cookies! The cookies will continue to firm slightly as they cool. When baked, the cookies should still be quite soft, but the surface should NOT be wet. 
  • Cool the cookies completely on a cooling rack before serving or placing in a jar. 

FAQ

Can I skip the sugar?

I wouldn’t. I’ve tried making the cookies sugar-free with banana only and found them not sweet enough. They didn’t pass the kid test either.

Which peanut butter is best for cookies?

Creamy all-natural peanut butter works best. Make sure it’s stirred well if split. Slightly drippy pb is the consistency you want - if it’s hardened, the cookies may turn out dry.

Will regular peanut butter (such as Skippy) work?

Yes, it will work but the nutritional value of these cookies will change. Commercial peanut butters, such as Skippy or Jif, contain added palm oil, sugar and other ingredients. 

What kind of oats are best for cookies?

Our family likes quick oats best because the cookies turn out soft. If you want more texture, use old fashioned oats. Stay away from instant or steel cut oats for this recipe.

A close-up of a chocolate chip oatmeal cookie on a gray surface. The cookie has visible oats, chocolate chips, and a rustic texture. Nearby are a few scattered chocolate chips and partial glimpses of other cookies and a glass of milk.

More baking with banana

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Recipe

A stack of five chocolate chip oatmeal cookies sits on a textured surface. The top cookie has a bite taken out of it. A few chocolate chips are scattered around, and a bowl of more chips is blurred in the background.

Peanut Butter Banana Oatmeal Cookies

5 from 1 vote
Print Pin Rate
Course: Breakfast, Dessert, Snack
Cuisine: American
Prep Time: 10 minutes
Cook Time: 10 minutes
Servings: 12 cookies
Calories: 131kcal
Author: Agnieszka

Ingredients

  • ½ cup mashed banana 1 large or 2 small bananas, See Note 1
  • ½ cup peanut butter all natural, See Note 2
  • cup brown sugar increase to ½ cup for sweeter cookies
  • 1 ⅛ cup quick oats or old fashioned oats that's 1 cup and 2 tablespoons, See Note 3
  • 1 teaspoon vanilla
  • ¼ teaspoon salt
  • 1 large egg
  • ¼ teaspoon baking soda

Instructions

  • Mash banana in a medium or large bowl. Make sure you have ½ cup.
  • Add peanut butter, egg, brown sugar, vanilla, baking soda and salt. Mix with a fork until mostly smooth.
  • Add oats and stir to combine. Then add chocolate chips and stir again to distribute evenly.
  • Cover the bowl with a clean kitchen towel or plastic wrap and place in the fridge for 30 minutes (longer is fine, too).
  • While the dough is chilling, preheat the oven to 350 degrees Fahrenheit. Line a large baking tray with parchment paper or a silicone mat.
  • After 30 minutes use a medium cookie scoop to drop 12 cookie dough balls onto the prepared baking tray.
  • Flatten each cookie with the back of a spoon to about ¼ inch thick. If you want, you can press some additional chocolate chips on top.
  • Bake for 12-15 minutes at 350 degrees. They will be soft but shouldn't be wet on top. Don't overbake.

Notes

Note 1: Use ripe or overripe banana (brown spots are good!). It's important to measure out mashed banana for best results. If you're bananas are medium sized, you will need about 1 and a half. Freeze the other half to make a smoothie
Note 2: All natural peanut butter doesn't have any added oils or sugar. The only ingredients should be peanuts and salt. Sometimes all natural peanut butter splits (you'll see a layer of liquid fat on top). If that's the case, mix it really well with a fork before adding to the recipe. 
Note 3: Start the dough with 1 cup and 2 tablespoons of oats. If you prefer firmer cookies or if yor peanut butter is drippy, you can increase the amount to 1 and ¼ cups. My kids prefer softer cookies with quick oats so I usually go with 1 cup and 2 tablespoons.  
Note 4: These cookies won't spread at all when baking so flatten them to the thickness you like. They shouldn't touch each other on the baking tray but you don't need to worry if they are close to each other.
Note 5: Don't overbake! After 12 minutes, open the oven and take a close look - you can even touch one cookie gently with your finger. They will still be quite soft but the surface should NOT be wet. 
Note 6: Cool the cookies completely on a cooling rack before serving or placing in a jar. 

Nutrition

Calories: 131kcal | Carbohydrates: 16g | Protein: 4g | Fat: 6g | Saturated Fat: 1g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 3g | Trans Fat: 0.002g | Cholesterol: 16mg | Sodium: 81mg | Potassium: 135mg | Fiber: 1g | Sugar: 8g | Vitamin A: 29IU | Vitamin C: 1mg | Calcium: 17mg | Iron: 1mg
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Meet the Author

Hi, I'm Agnieszka. I'm a mom of three and recipe developer, writer and photographer behind Wholly Tasteful. I love creating comforting, delicious, family-friendly recipes that you can feel good about.

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