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Banana Bread Brownies Recipe

Lil' Luna
Banana bread brownies are moist, airy, and filled with banana goodness. They are topped with fluffy buttercream frosting!
5 from 6 votes
Prep Time 20 mins
Cook Time 35 mins
Total Time 55 mins
Course Dessert
Cuisine American
Servings 12
Calories 505 kcal


for the brownies:

for the frosting:


  • Preheat the oven to 375. Grease or line with parchment a 9 x 13 baking pan.
  • In a large bowl, beat together the sugar and butter. Add the sour cream, eggs, mashed bananas, and vanilla, and blend until smooth. Add the flour, baking soda, and salt, and mix to combine.
  • Pour the mixture into the prepared pan. Bake 35-40 minutes, until the brownies are lightly browned on top and a toothpick inserted in the center comes out clean. Let cool completely before frosting.
  • To make the frosting, add the butter to a medium skillet. Melt the butter over medium low heat, stirring gently, until foamy. Watch carefully for the butter to turn a light brown color, then remove from heat and immediately pour the butter into a large bowl or the bowl of a stand mixer.
  • Add the powdered sugar and vanilla to the bowl, and mix to combine. With the mixer on low speed, add the milk to form a smooth and creamy frosting. Beat on high speed for 3-5 minutes, until light and fluffy. Spread the frosting over the cooled brownies, then sprinkle with cinnamon.


Serving: 12gCalories: 505kcalCarbohydrates: 79gProtein: 4gFat: 20gSaturated Fat: 12gTrans Fat: 1gCholesterol: 78mgSodium: 401mgPotassium: 179mgFiber: 1gSugar: 59gVitamin A: 659IUVitamin C: 3mgCalcium: 41mgIron: 1mg
Keyword Banana Bread Brownies
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