Peanut Butter Banana Baked Oatmeal Bars

A peanut butter oatmeal bar being lifted from a baking dish.These peanut butter banana baked oatmeal bars are soft, chewy, and studded with sweet chocolate chips in every bite!

A peanut butter oatmeal bar being lifted from a baking dish.

Get ready to fall in love with our Peanut Butter Banana Baked Oatmeal Bars! These scrumptious treats combine the hearty goodness of oats with the creaminess of bananas and the nutty flavor of peanut butter, making them a super satisfying snack for any time of day.

A baked oatmeal bar being lifted from the pan.

What are Peanut Butter Banana Baked Oat Bars?

Our peanut butter banana baked oatmeal bars are the ultimate treat for anyone who loves a decadently delicious yet relatively nutritious snack! These chewy, flavor-packed bars are the perfect combination of hearty oats, sweet bananas, and creamy peanut butter along with a generous sprinkle of chocolatey goodness. 

These bars are a breeze to make and they’re packed with wholesome ingredients. But that’s not all – these bars are so versatile! Need a quick breakfast on the run, a midday pick-me-up, or a sweet after-dinner snack? These have got you covered!

A baking dish full of peanut butter baked oatmeal bars.

Ingredients You Need

  • Quick Cooking Oats – These little nutritional powerhouses are the base of the bars and soak up all the goodness of the other ingredients.
  • Baking Powder – This magical ingredient helps your bars rise, giving them the perfect texture.
  • Sea Salt – Just a pinch of sea salt brings out all the sweet and nutty flavors.
  • Ground Cinnamon – Cinnamon adds warmth to the bars, making them extra irresistible.
  • Nutmeg – Nutmeg gives the bars a subtle touch of spice.
  • Overripe Bananas – Overripe bananas are naturally super sweet and creamy, making your bars moist and flavorful.
  • Creamy Peanut Butter – Creamy peanut butter adds the signature nutty flavor and rich texture that defines these delicious bars! 
  • Vanilla Extract – A splash of vanilla extract brings out all of the flavors and gives them an amazing aroma.
  • Pure Maple Syrup – Pure maple syrup adds natural sweetness and a hint of maple goodness that we absolutely love!
  • Large Egg – A lightly beaten egg helps to bind everything together, ensuring your bars hold up beautifully.
  • Whole Milk – Whole milk adds creaminess and makes the bars super moist.

Topping:

  • Creamy Peanut Butter – While it’s optional, we love drizzling even more peanut butter over the top. 
  • Chocolate Chips – Chocolate chips add little pockets of melty, chocolatey bliss!
A peanut butter baked oatmeal bar on a plate with a fork holding a bite.

How to Make Peanut Butter Banana Baked Oatmeal Bars

  1. Mix Together Wet Ingredients. Fold together the mashed bananas and peanut butter in a large bowl before adding the vanilla, syrup, and egg. Once combined, pour in the milk and stir together. 
  2. Combine the Dry and Wet Ingredients. Pour the oats, baking powder, sea salt, and cinnamon into the banana and peanut butter mixture and mix together until completely combined. 
  3. Bake the Bars. Transfer the oat mixture to the prepared baking dish that has been greased. Sprinkle chocolate chips on top and place in the oven to bake for the recommended time. 
  4. Top and Serve. After removing the pan from the oven, top with more peanut butter if desired. Allow the bars to cool briefly, then slice. Serve immediately or allow the bars to reach room temperature before storing. The bars can be served cold as well.

Variations

  • Berries – Mix in dried berries like blueberries, raspberries, or cranberries for a fruity twist.
  • Crunchiness – Add chopped nuts like peanuts, almonds, walnuts, or pecans for an extra crunch.
  • Chocolate – Swirl in some melted dark chocolate or cocoa powder for even more rich, chocolatey flavor.
  • Coconut – Mix in shredded coconut for a tropical flair that pairs perfectly with peanut butter.
  • Protein Boost – Stir in a scoop of your favorite protein powder to make these bars a great post-workout snack.
  • Pumpkin Spice – Replace bananas with pumpkin puree and add pumpkin pie spice for a fall favorite.
  • Nutella – Swirl in some Nutella with the mashed bananas for a heavenly chocolate-hazelnut combination.

Can I Store Leftovers? 

You can definitely store leftover peanut butter banana baked oatmeal bars, but if your house is anything like ours, they probably won’t stick around long! You can keep them on the counter for up to 3 days in an airtight container or keep them longer by popping them in the fridge or freezer.

Place these bars in the fridge for up to 1 week after placing them in a resealable bag or airtight container. If you choose to stack them, be sure to place parchment paper between the layers. 

Freeze the bars for up to 3 months in freezer bags or a freezer-safe container. 

More Peanut Buttery Recipes

If you’re on the prowl for more recipes that are chock-full of peanut buttery goodness, you’re in luck! We’re big fans of this creamy deliciousness — check out some more of our favorites: 

Chocolate Peanut Butter Kunafa (Knafeh)

Oatmeal Peanut Butter Cookies

Chocolate Peanut Butter Bars (Homemade Snickers)

No-Bake Peanut Butter Energy Bars

A peanut butter oatmeal bar on a plate with a fork holding a bite.
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Peanut Butter Baked Oatmeal Bars Recipe

These peanut butter banana baked oatmeal bars are soft, chewy, and studded with sweet chocolate chips in every bite!
Prep Time5 minutes
Cook Time25 minutes
Total Time30 minutes
Course: Breakfast, Snack
Cuisine: American
Keyword: baked oatmeal bars, oatmeal bars, oatmeal bars recipe, peanut butter oatmeal bars
Servings: 8 servings
Author: Food Dolls

Ingredients

  • 3 overripe bananas mashed
  • ¼ cup creamy peanut butter
  • 1 teaspoon vanilla extract
  • ¼ cup pure maple syrup
  • 1 large egg lightly beaten
  • ¾ cup whole milk
  • 1 ½ cups quick cooking oats
  • 1 teaspoon baking powder
  • ½ teaspoon sea salt
  • 1 teaspoon ground cinnamon
  • ½ teaspoon nutmeg

Topping:

  • ¼ cup Chocolate chips
  • ¼ cup creamy peanut butter

Instructions

Preheat Oven:

  • Preheat your oven to 350°F (175°C). Grease a 9×9-inch square baking pan and set aside.

Combine Wet Ingredients:

  • In a large bowl, combine the mashed bananas and peanut butter. Stir in the vanilla extract, maple syrup, and egg. Add the milk and mix well.
    3 overripe bananas, ¼ cup creamy peanut butter, 1 teaspoon vanilla extract, ¼ cup pure maple syrup, 1 large egg, ¾ cup whole milk

Add Dry Ingredients:

  • Add the quick cooking oats, baking powder, sea salt, ground cinnamon, and nutmeg to the wet ingredients. Stir until the batter is uniform throughout.
    1 ½ cups quick cooking oats, 1 teaspoon baking powder, ½ teaspoon sea salt, 1 teaspoon ground cinnamon, ½ teaspoon nutmeg

Bake:

  • Pour the mixture into the prepared baking dish. Top with chocoale chips Bake for 25 minutes, or until the top slightly springs back when touched and the edges are just barely brown.
    ¼ cup Chocolate chips

Drizzle and Serve:

  • If desired, drizzle the top with additional peanut butter. Let cool slightly before cutting into squares. Serve warm or cold. Store in the refrigerator and reheat in the microwave if desired.
    ¼ cup creamy peanut butter

Nutrition

Serving: 1serving