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Banana Bread Brownies

These Banana Bread Brownies are a delightful combination of moist banana bread and chewy brownies, topped with a silky frosting. A perfect treat for any occasion!
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 12 squares
Course: Dessert, Snack
Cuisine: American
Calories: 240
Ingredients Method Notes

Ingredients
  

For the Brownies
  • 1 cup 1 cup granulated sugar
  • 1 cup 1 cup sour cream (or plain Greek yogurt) Can be substituted with Greek yogurt.
  • ½ cup ½ cup unsalted butter, softened
  • 2 large 2 large eggs
  • 4 ripe bananas 4 ripe bananas (mashed, about 2 cups) Use very ripe bananas for maximum sweetness.
  • 2 teaspoons 2 teaspoons pure vanilla extract
  • 2 cups 2 cups all-purpose flour
  • 1 teaspoon 1 teaspoon baking soda
  • ¾ teaspoon ¾ teaspoon salt
  • ½ cup ½ cup chopped walnuts (optional) Use if a crunch is desired.
For the Frosting
  • ½ cup ½ cup unsalted butter
  • 4 cups 4 cups powdered sugar
  • 1½ teaspoons 1½ teaspoons pure vanilla extract
  • 3 tablespoons 3 tablespoons milk Add more if needed for spreading.

Method
 

Prepare the Pan
  1. Preheat oven to 350°F (175°C).
  2. Grease and flour a 9×13-inch baking dish or line with parchment paper.
Make the Banana Brownie Batter
  1. In a large mixing bowl, cream together sugar, sour cream, and softened butter until light and fluffy.
  2. Beat in eggs, mashed bananas, and vanilla extract until smooth.
  3. In a separate bowl, whisk together flour, baking soda, and salt.
  4. Gradually add dry ingredients to wet mixture, mixing just until combined.
  5. Fold in walnuts, if using.
Bake
  1. Pour batter into the prepared pan and spread evenly.
  2. Bake for 25–30 minutes, or until a toothpick inserted in the center comes out clean.
  3. Let cool in the pan on a wire rack.
Prepare the Frosting
  1. In a small saucepan, melt butter over medium heat and cook until it turns a light golden brown and smells nutty (about 4–5 minutes).
  2. Remove from heat and let cool slightly.
  3. Whisk in powdered sugar, vanilla, and milk until smooth and spreadable.
Frost and Serve
  1. Spread frosting over cooled brownies.
  2. Cut into squares or bars and serve.

Notes

For an added treat, serve with a scoop of vanilla ice cream on top. Store in an airtight container at room temperature for 2-3 days or refrigerate for up to a week. Can be frozen for up to 3 months.