Description

Banana Bread Brownies bring together two timeless favorites—banana bread and brownies—into one irresistibly moist, flavorful treat. With the sweetness of ripe bananas and the richness of brown butter frosting, these dessert bars are soft, chewy, and perfect for sharing at potlucks, picnics, or casual family gatherings. Whether you’re a fan of traditional banana bread or decadent brownies, this recipe delivers the best of both worlds in just 30 minutes.

Ingredients

Brownies
2 cups all-purpose flour
1 teaspoon baking powder
1 teaspoon baking soda
1 teaspoon cinnamon
½ teaspoon salt
½ cup unsalted butter (softened)
½ cup light brown sugar (packed)
½ cup granulated sugar
2 large eggs
3 ripe medium bananas (mashed, about 1 cup)
¾ cup buttermilk
1 tablespoon vanilla extract
¾ cup chopped walnuts

Frosting
⅓ cup unsalted butter
2½ cups powdered sugar
¼ cup half and half cream
2 teaspoons vanilla extract

Instructions

To Make the Brownies
Preheat the oven to 350°F and spray a 9×13-inch baking pan with non-stick cooking spray. In a medium bowl, whisk together the flour, baking powder, baking soda, cinnamon, and salt. Set aside. In a large bowl, cream together the softened butter, brown sugar, and granulated sugar using an electric mixer until light and fluffy. Add the eggs, mashed bananas, buttermilk, and vanilla extract, mixing until well blended. Gradually add the dry ingredients into the wet mixture and stir until fully combined. Fold in the chopped walnuts. Pour the batter into the prepared baking dish and bake for 20 minutes, or until the edges are golden and a toothpick inserted into the center comes out with a few moist crumbs.

To Make the Brown Butter Frosting
In a small saucepan over medium heat, melt the butter and cook until it turns golden brown with a nutty aroma. Remove immediately from the heat and whisk in the powdered sugar, half and half, and vanilla until smooth. Spread the frosting over the warm banana brownies using a silicone spatula for an even layer.

Notes

Serving Tips

For clean cuts, allow the banana bread brownies to cool for at least 15–20 minutes before slicing.
Serve slightly warm for a soft, gooey texture or at room temperature for a firmer bite.
These brownies pair beautifully with a scoop of vanilla ice cream, a drizzle of caramel, or a sprinkle of cinnamon for an elevated dessert.
Garnish with a few extra chopped walnuts or a dusting of powdered sugar if serving at a party or gathering.

Storage Tips

Room Temperature: Store the brownies in an airtight container at room temperature for up to 3 days. Place parchment paper between layers to prevent sticking.
Refrigerator: If you prefer a firmer texture or live in a warm climate, refrigerate the brownies in a sealed container for up to 5 days. Let them sit at room temperature before serving for best flavor.
Freezer: For longer storage, wrap individual brownies tightly in plastic wrap, then place them in a freezer-safe zip-top bag or container. Freeze for up to 2 months. Thaw in the refrigerator or on the counter before enjoying.
Reheating: Microwave individual brownies for 10–15 seconds for that fresh-out-of-the-oven feel, especially if frozen or refrigerated.

These tips ensure that every bite of your banana bread brownies remains moist, flavorful, and just as delightful as when they were freshly baked.