Soft Baked Banana Oat Breakfast Bars

Quick Recipe Version (TL;DR)

• Yield: 12 breakfast bars
• Prep Time: 15 minutes
• Cook Time: 26 minutes
• Total Time: 1 hour 6 minutes

Quick Ingredients

• 3 large very ripe bananas, mashed, about 1 1/2 cups or 360 g
• 2 large eggs
• 1/3 cup creamy peanut butter, 85 g
• 1/4 cup pure maple syrup, 60 ml
• 2 tablespoons unsalted butter, melted and slightly cooled
• 1 teaspoon vanilla extract
• 2 cups old-fashioned rolled oats, 200 g
• 1/2 cup oat flour, 50 g
• 1 teaspoon ground cinnamon
• 1 teaspoon baking powder
• 1/4 teaspoon fine sea salt
• 1/2 cup chopped walnuts or pecans, 55 g, divided
• 1/3 cup mini semisweet chocolate chips, 60 g, divided

Do This

• 1. Heat the oven to 350°F and line an 8×8-inch baking pan with parchment paper.
• 2. Mash the bananas until mostly smooth, then whisk in eggs, peanut butter, maple syrup, melted butter, and vanilla.
• 3. Stir in oats, oat flour, cinnamon, baking powder, and salt until evenly moistened.
• 4. Let the mixture rest for 5 minutes so the oats can absorb some moisture.
• 5. Fold in most of the walnuts and chocolate chips, reserving a little for the top.
• 6. Spread into the pan, sprinkle with reserved mix-ins, and bake for 26 minutes at 350°F.
• 7. Cool for 25 minutes, lift from the pan, slice into 12 bars, and serve.

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Why You’ll Love This Recipe

• Soft, chewy, and satisfying: Mashed banana keeps the bars tender while oats make them hearty enough for breakfast.
• Great for busy mornings: Bake once, slice, and keep a batch ready for grab-and-go breakfasts or snacks.
• Naturally sweetened: Ripe bananas and a modest amount of maple syrup give the bars a cozy sweetness without making them feel like dessert.
• Flexible mix-ins: Use walnuts for crunch, chocolate chips for a little treat, or a combination of both.

Grocery List

• Produce: 3 large very ripe bananas
• Dairy: 2 large eggs, unsalted butter
• Pantry: Old-fashioned rolled oats, oat flour, creamy peanut butter, pure maple syrup, vanilla extract, ground cinnamon, baking powder, fine sea salt, chopped walnuts or pecans, mini semisweet chocolate chips

Full Ingredients

For the Banana Oat Bars

• 3 large very ripe bananas, mashed, about 1 1/2 cups or 360 g
• 2 large eggs, at room temperature if possible
• 1/3 cup creamy peanut butter, 85 g, well stirred
• 1/4 cup pure maple syrup, 60 ml
• 2 tablespoons unsalted butter, melted and cooled for 5 minutes
• 1 teaspoon vanilla extract
• 2 cups old-fashioned rolled oats, 200 g
• 1/2 cup oat flour, 50 g
• 1 teaspoon ground cinnamon
• 1 teaspoon baking powder
• 1/4 teaspoon fine sea salt

Mix-Ins and Topping

• 1/2 cup chopped walnuts or pecans, 55 g, divided
• 1/3 cup mini semisweet chocolate chips, 60 g, divided

Step-by-Step Instructions

Step 1: Prepare the pan and heat the oven

Preheat the oven to 350°F. Line an 8×8-inch baking pan with parchment paper, leaving a little overhang on two opposite sides so you can lift the bars out later. Lightly grease the parchment and any exposed sides of the pan with butter or nonstick spray.

Step 2: Mash the bananas

Peel the bananas and place them in a large mixing bowl. Mash them well with a fork or potato masher until they are mostly smooth with a few small banana pieces remaining. You should have about 1 1/2 cups mashed banana. If you have much more than that, set the extra aside for another use so the bars do not turn gummy.

Step 3: Mix the wet ingredients

Add the eggs, peanut butter, maple syrup, melted and slightly cooled butter, and vanilla extract to the mashed bananas. Whisk until the mixture looks smooth and cohesive. A few tiny specks of peanut butter are fine, but try to break up any large streaks so every bar bakes evenly.

Step 4: Add the dry ingredients

Add the rolled oats, oat flour, cinnamon, baking powder, and fine sea salt to the bowl. Stir with a sturdy spatula until all the oats are evenly coated and no dry pockets of flour remain. The mixture will look thick, moist, and scoopable rather than pourable.

Step 5: Rest the batter and fold in the mix-ins

Let the mixture rest at room temperature for 5 minutes. This short rest helps the oats absorb moisture, which gives the finished bars a softer, more even texture. Reserve about 2 tablespoons of the chopped nuts and 1 tablespoon of the chocolate chips for topping, then fold the remaining nuts and chocolate chips into the batter.

Step 6: Fill the pan

Scrape the batter into the prepared pan. Use a spatula to spread it into an even layer, pressing it gently into the corners. Smooth the top, then sprinkle the reserved walnuts and chocolate chips evenly over the surface. Lightly press the toppings into the batter so they stick after baking.

Step 7: Bake until softly set

Bake at 350°F for 26 minutes, or until the edges are lightly golden, the center looks set, and a toothpick inserted into the middle comes out with moist crumbs but no wet batter. For the softest bars, avoid overbaking; the center should spring back gently when touched.

Step 8: Cool, slice, and serve

Let the bars cool in the pan for 20 minutes. Use the parchment overhang to lift the slab onto a cutting board, then cool for 5 more minutes before slicing. Cut into 12 bars. Serve warm, at room temperature, or chilled, depending on your favorite texture.

Pro Tips

• Use very ripe bananas: Bananas with lots of brown spots give the best sweetness and moisture.
• Measure the banana mash: Too much banana can make oat bars dense or gummy. Aim for exactly 1 1/2 cups mashed banana.
• Stick with old-fashioned rolled oats: Quick oats make a softer, more compact bar, while steel-cut oats will not soften properly in this recipe.
• Make your own oat flour if needed: Blend old-fashioned oats in a blender or food processor until fine, then measure 1/2 cup.
• Let them cool before slicing: Warm bars are tender and can crumble. A short cooling time helps them set into neat, portable squares.

Variations

• Nut-free chocolate chip bars: Use sunflower seed butter instead of peanut butter, skip the walnuts, and increase the mini chocolate chips to 3/4 cup.
• Blueberry almond bars: Replace the chocolate chips with 1/2 cup fresh blueberries and use chopped almonds instead of walnuts. Fold gently so the berries do not burst.
• Extra cinnamon breakfast bars: Increase the cinnamon to 1 1/2 teaspoons and add 1/8 teaspoon ground nutmeg for a warmer, bakery-style flavor.

Storage & Make-Ahead

Store cooled banana oat breakfast bars in an airtight container at room temperature for up to 2 days or in the refrigerator for up to 5 days. For longer storage, wrap individual bars tightly and freeze them in a freezer-safe bag or container for up to 3 months. Thaw overnight in the refrigerator or warm a frozen bar in the microwave for 20 to 30 seconds. To make mornings easier, bake the bars the night before, cool completely, slice, and refrigerate so they are ready to grab on the way out the door.

Nutrition (per serving)

Calories: 250 kcal | Carbs: 31g | Protein: 7g | Fat: 12g | Saturated Fat: 4g | Fiber: 4g | Sugar: 11g | Sodium: 120mg | Cholesterol: 36mg