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Banana Bread Brownies

A delightful fusion of banana bread and brownies, featuring a rich, fudgy texture and creamy buttercream frosting that melts in your mouth.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 16 pieces
Course: Dessert, Snack
Cuisine: American
Calories: 250
Ingredients Method Notes

Ingredients
  

For the Brownies
  • 1 cup 1 cup (200 g) granulated sugar Granulated sugar enhances sweetness.
  • 1 cup 1 cup (240 ml) sour cream or plain Greek yogurt For added moisture.
  • ½ cup ½ cup (113 g) unsalted butter, softened Adds richness to the brownies.
  • 2 large 2 large eggs Helps bind the ingredients together.
  • 4 ripe bananas 4 ripe bananas, mashed (about 2 cups) Use very ripe bananas for best flavor.
  • 2 teaspoons 2 teaspoons pure vanilla extract Enhances overall flavor.
  • 2 cups 2 cups (250 g) all-purpose flour Can substitute for gluten-free flour blend.
  • 1 teaspoon 1 teaspoon baking soda For leavening.
  • ¾ teaspoon ¾ teaspoon salt Balances sweetness.
  • ½ cup ½ cup (60 g) chopped walnuts (optional) Add for texture and flavor.
For the Frosting
  • ½ cup ½ cup (113 g) unsalted butter Melted for making frosting.
  • 4 cups 4 cups (480 g) powdered sugar Main sweetening ingredient in frosting.
  • 1½ teaspoons 1½ teaspoons pure vanilla extract For flavor enhancement.
  • 3 tablespoons 3 tablespoons milk (more if needed for spreading) Adjust for consistency of frosting.

Method
 

Preparation
  1. Preheat your oven to 350°F (175°C) and grease and flour a 9×13-inch baking dish, or line it with parchment paper.
  2. In a large mixing bowl, cream together the granulated sugar, sour cream, and softened butter until light and fluffy.
  3. Beat in the eggs, mashed bananas, and vanilla extract until smooth and well combined.
  4. In a separate bowl, whisk together the all-purpose flour, baking soda, and salt.
  5. Gradually add the dry ingredients to the wet mixture, mixing just until combined. Be careful not to overmix.
  6. If you’re adding walnuts, fold them in gently.
Baking
  1. Pour the brownie batter into the prepared pan, spreading it evenly.
  2. Bake for 25 to 30 minutes, or until a toothpick inserted in the center comes out clean (but moist).
  3. Let the brownies cool in the pan on a wire rack.
Frosting
  1. In a small saucepan, melt the butter over medium heat, cooking until it turns a light golden brown and emits a nutty aroma (about 4–5 minutes). Remove from heat and let cool slightly.
  2. In a bowl, whisk together the powdered sugar, vanilla, and milk until smooth and spreadable.
Serving
  1. Once the brownies are completely cool, spread the frosting evenly over the top.
  2. Cut into squares or bars and serve to your friends and family.

Notes

To make these brownies vegan, replace the eggs with flax eggs (1 tablespoon ground flaxseed mixed with 2.5 tablespoons of water per egg) and use plant-based yogurt for the sour cream. For a gluten-free option, use a 1:1 gluten-free flour blend.