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!

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

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

Step 1: Preheat the oven to 350℉ and line an 8x8 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.

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.

Want to try more baked oatmeal breakfast recipes?
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Peanut Butter Banana Oatmeal Bars
Ingredients
- 1¼ cup mashed banana
- ¾ cup peanut butter
- ¼ cup maple syrup
- 1 large egg at room temperature
- 1 teaspoon vanilla extract
- 1 cup rolled oats
- 1 cup all-purpose flour spooned and leveled
- 1 teaspoon cinnamon
- 1 teaspoon baking powder
- ¼ teaspoon salt
- ¾ cup dark chocolate chips
Instructions
- Preheat the oven to 350℉ and line an 8x8 square baking pan with parchment paper, leaving an overhang for easy removal. Set aside.
- In a large bowl, mix together the mashed banana, peanut butter, syrup, egg, and vanilla until combined.
- Add in the oats, flour, cinnamon, baking powder, and salt. Mix using a rubber spatula until just combined. Fold in the chocolate chips.
- 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.
- Allow them to cool completely in the pan on a wire cooling rack before slicing them into bars.
Notes
- 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.
Nutrition
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Lu says
These oatmeal bars are delicious... they never last long in my house! The combo of the peanut butter + banana + chocolate chips makes for a moist and flavorful snack/breakfast! Highly recommend.
Kelly Nash says
So happy to hear you enjoyed these bars, Lu! Thanks for trying them!
Victoria says
These look and sound amazing Can these be made with sun butter?
Kelly Hamilton says
I haven't tried them with sun butter, but I don't see why they couldn't be!
Christine says
These are unreal! Was looking for something a bit healthier and they hit the spot
Kelly Hamilton says
Glad you enjoyed these! Thanks for trying them!