Peanut Butter Banana Oatmeal Bars

Name: Peanut Butter Banana Oatmeal Bars
Prep time: 10 min
Cook time: 30 min
Total time: 45 min
Ingredients: 1¼ cup mashed banana; ¾ cup peanut butter; ¼ cup maple syrup; 1 large egg (at room temperature); 1 tsp vanilla extract; 1 cup rolled oats; 1 cup all-purpose flour (spooned and leveled); 1 tsp cinnamon; 1 tsp baking powder; ¼ tsp salt; ¾ cup dark chocolate chips

by Kelly Nash on May 12, 2023 (updated Mar 6, 2026)

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These Peanut Butter Banana Oatmeal Bars are perfect for breakfast on the go! This one-bowl recipe is easy to make in under an hour!

Freshly baked Peanut Butter Banana Oatmeal bars that are cut in serving sizes and placed on parchment paper.

Peanut Butter Banana Oatmeal Bars are the new snack on rotation in my house! They’re loaded with hearty oats, ripe bananas, and a touch of maple syrup for natural sweetness. Plus they taste absolutely amazing.

These bars come together in about 45 minutes, in just one bowl, and you don’t even need an electric mixer. Super easy to make ahead and grab for on-the-go breakfasts.

My other fav quick & easy snack is my Peanut Butter Oatmeal Balls. If you love oats and want to add more protein to your meals, try my Protein Baked Oats!

Why You Need These Oatmeal Bars

They are easy to make- you only need one bowl and no fancy equipment is needed!
They make a great snack or something quick to grab for breakfast! I also love them for a sweet treat at night as well.

Recipe Ingredients

Ingredients to make Peanut Butter Banana Oatmeal Bars.

Here are some notes on a few ingredients- please see the full ingredient list in the recipe card below!

bananas- Using ripe bananas works best for this recipe, as they are easier to mash.
peanut butter- I tested this with both regular peanut butter and natural peanut butter, so feel free to use either. I would just avoid the super oily peanut butter as it can add a lot of extra oil to the bars.
maple syrup- we are using this as our sweetener for this recipe!
oats- I use old-fashioned or rolled oats for this recipe.
chocolate chips- feel free to skip these but I like the taste of the chocolate. Dark chocolate tastes great!

Step-by-Step Instructions

How to make Peanut Butter Banana Oatmeal bars. 1. Mix wet and dry ingredients in glass mixing bowl with a whisk. 2. Add chocolate chips into the batter and mix in glassing mixing bowl. 3. Pour batter into baking pan that is lined with parchment paper.

Step 1: Preheat the oven to 350℉ and line an 8×8 square baking pan with parchment paper, leaving an overhang for easy removal. Set aside.

Step 2: In a large bowl, whisk together the mashed banana, peanut butter, syrup, egg, and vanilla until fully combined.

Step 3: Add in the oats, flour, cinnamon, baking powder, and salt. Mix using a rubber spatula until just combined. Fold in the chocolate chips.

Step 4: Pour the batter into the prepared pan and bake for 27-30 minutes, or until a toothpick inserted into the middle of the bars comes out clean.

Step 5: Allow them to cool completely in the pan on a wire cooling rack before slicing them into bars.

Close up shot of one peanut butter oatmeal banana bar that is staked on top of a line of bars.

Tips and Tricks

If you don’t want to mash your bananas with a fork, use an electric mixer!
Always line your baking sheet with parchment paper, it makes removing the bars from the pan a million times easier.
Wait to cut your bars until they cool completely, they cut better when they have cooled off.
Cut your bars into squares to get more servings.

Storing & Freezing

These bars can be stored in an airtight container at room temperature for 3-4 days, or up to a week in the fridge. To freeze, store them in a freezer-safe container for up to 2 months. Let the bars sit at room temperature to thaw.

Freshly baked peanut butter oatmeal banana bars cut into rectangles and ready to serve.

Want to try more baked oatmeal breakfast recipes?

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If you made this recipe, I would love to know what you thought! Leave me a star rating and a comment below – I read them all! ⭐️ Your reviews not only help my business but other bakers as well!

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This post contains affiliate links which means if you purchase something off of one of those links I make a small commission at no extra cost to you. Thanks for supporting my blog!

This post contains affiliate links which means if you purchase something off of one of those links I make a small commission at no extra cost to you. Thanks for supporting my blog!

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