This Banana Bread Brownies recipe combines the beloved flavors of traditional banana bread and gooey brownies. After 15 years of perfecting my culinary skills, I’ve created a treat that’s truly irresistible. This is the dessert my family requests for every celebration—once you try it, you’ll understand why. You may also find 3 Ingredients Banana Bread useful.
Why You’ll Love This Recipe
- Crowd-pleasing: This recipe always impresses guests and brings everyone together.
- Easy to make: Even beginners can bake these brownies with confidence.
- One-bowl cleanup: You’ll love that it’s easy to whip up and clean up afterward.
- Customizable: Add your favorite nuts or chocolate chips for a personal touch.
Ingredients You’ll Need

These Banana Bread Brownies feature a blend of familiar ingredients that create a rich, moist texture. You’ll need ripe bananas for natural sweetness and flavor. You may also find Air Fryer Banana Bread Mini Loaf useful.
- 3 ripe bananas — Look for bananas that have a brownish peel for maximum sweetness and flavor.
- 2 eggs — Fresh eggs add moisture and contribute to the brownies’ structure.
- 1 cup sour cream — This ingredient ensures a rich, creamy texture.
- 2 cups all-purpose flour — This gives the brownies their structure. I’ve tested with whole wheat as a substitute, but it alters the texture.
- 1/2 cup walnuts — Adds crunch and nutty flavor; pecans also work well.
See the recipe card below for complete ingredients and exact measurements. You may also find Banana Bread 2 useful.
Equipment You’ll Need
- 13 x 9-inch baking pan — Essential for the perfect brownie shape.
- Mixing bowl — A large bowl to combine your ingredients easily.
- Electric mixer — This helps achieve a smooth batter without lumps.
How to Make Banana Bread Brownies
This recipe comes together in just a few simple steps, making it easier than it looks. You may also find Banana Bread useful.
- Preheat the oven: Set your oven to 375°F (190°C) and grease a 13 x 9-inch baking pan.
- Mix the wet ingredients: In a large bowl, beat together sugar, sour cream, butter, and eggs until creamy.
- Add bananas and vanilla: Stir in the mashed bananas and vanilla extract until well combined.
- Combine dry ingredients: Add flour, baking soda, and salt, then blend the mixture for 1 minute.
- Fold in walnuts: Gently fold in the chopped walnuts to add texture to the brownies.
- Spread the batter: Evenly spread the batter into the prepared pan and smooth the top.
- Bake: Bake for 25 minutes or until golden brown and a toothpick inserted in the center comes out clean. Let cool slightly before frosting.
- Prepare frosting: In a saucepan, melt butter over medium heat. Continue heating until golden brown, then whisk in powdered sugar, followed by milk one tablespoon at a time until smooth. Stir in vanilla.
- Frost the brownies: Pour the frosting over the warm brownies, smoothing it with a spatula. Allow to cool completely before cutting into squares.
Pro Tips for Success
- Don’t rush the cooling: Let the brownies cool properly to ensure the frosting sets beautifully.
- Check banana ripeness: The riper the bananas, the sweeter and more flavorful your brownies will be.
- Room temperature ingredients: Bring eggs and butter to room temperature for a smoother batter.
Variations to Try
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