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Delicious banana bread brownie bars cut into squares on a cooling rack.

Quick way to grow 5-Star Banana Bread Brownie Bars

These Banana Bread Brownie Bars are a delightful fusion of two classic treats, offering a rich chocolatey base with a moist banana bread topping. Perfect for a quick dessert or snack, they're easy to make and universally loved.
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Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings 12 bars
Calories 280 kcal

Equipment

  • 8x8 inch baking pan
  • Whisk
  • Mixing bowls

Ingredients
  

Brownie Layer

  • 1/2 cup unsalted butter (113g), melted
  • 1 cup granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1/2 cup all-purpose flour
  • 1/2 cup unsweetened cocoa powder
  • 1/4 teaspoon salt
  • 1/2 cup chocolate chips optional

Banana Bread Layer

  • 1 cup mashed ripe bananas about 2-3 medium bananas
  • 1/4 cup granulated sugar
  • 1 large egg
  • 2 tablespoons vegetable oil
  • 1/2 teaspoon vanilla extract
  • 1 cup all-purpose flour
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1/4 cup chocolate chips optional

Instructions
 

Brownie Layer

  • Preheat oven to 350°F (175°C) and grease an 8x8 inch baking pan.
  • Whisk melted butter and granulated sugar, then beat in eggs and vanilla extract.
  • Stir in flour, cocoa powder, and salt until just combined, then fold in chocolate chips if using.
  • Spread the brownie batter evenly into the prepared baking pan.

Banana Bread Layer

  • In a separate bowl, mash ripe bananas and mix with granulated sugar, egg, vegetable oil, and vanilla extract.
  • In another bowl, whisk together flour, baking soda, and salt.
  • Combine the wet and dry ingredients for the banana bread, then fold in chocolate chips if desired.
  • Carefully spoon the banana bread batter over the brownie layer in the baking pan and gently spread.

Bake and Serve

  • Bake for 25-30 minutes, or until a toothpick inserted into the center comes out with moist crumbs.
  • Let cool completely before cutting into bars and serving.

Notes

For extra flavor, you can add a pinch of cinnamon or nutmeg to the banana bread layer. Make sure the bananas are very ripe for the best flavor and sweetness Ratio. Store at room temperature in an airtight container for up to 3 days, or in the refrigerator for up to 5 days.