Gourmet Brown Butter Banana Bread Bars with Luscious Frosting

Gourmet Brown Butter Banana Bread Bars with Luscious Frosting

Discover the delicious fusion of classic banana bread with the rich, nutty flavor of brown butter in these Gourmet Brown Butter Banana Bread Bars. These bars elevate humble banana bread into a decadent treat, topped with a creamy brown butter frosting that is simply irresistible. Perfectly moist, full of banana flavor, and finished with a silky frosting, these bars offer a sophisticated twist on traditional flavors.


Why you'll love it: Using browned butter in the bars and frosting adds a deep, caramel-like richness that enhances the natural sweetness of the bananas. Sour cream ensures that every bite is incredibly moist and tender, while vanilla extract complements the fruity essence of the banana. This dessert will not only satisfy your sweet tooth, but will also impress with its gourmet touch.

Perfect opportunity: These banana bread bars are perfect for brunches, family gatherings, or as a special treat to enjoy with your afternoon coffee. They are also perfect for potlucks, bake sales, or as a comforting dessert that can be enjoyed any day of the week. Whether you are hosting a party or just looking for something special to make, these bars are sure to be a hit.

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Decorating tips: For a beautiful presentation, consider topping the frosted bars with a sprinkle of cinnamon, chopped nuts or even banana slices before the frosting sets. These toppings not only add visual appeal, but also enhance the texture and flavor of the bars.


Banana Bread Bars:

  • 1/2 cup (110 g) unsalted butter
  • 1 cup (200 g) granulated sugar
  • 1/2 cup (105 g) light brown sugar, packed
  • 2 large eggs
  • 1 cup (250 g) sour cream
  • 1 1/2 cups (385 g) ripe bananas, mashed (about 4 medium bananas)
  • 1 teaspoon vanilla extract
  • 1 teaspoon baking soda
  • 1/2 teaspoon kosher salt
  • 2 cups (265 g) all-purpose flour

Brown butter frosting:

  • 3/4 cup (170g) unsalted butter (+ 2 tablespoons chilled)
  • 3 cups (300 g) powdered sugar
  • 1 teaspoon vanilla extract
  • 1/4 cup (60 g) milk, room temperature


  1. Preparation:
    • Preheat your oven to 350°F (175°C). Grease an 11 x 15-inch jelly-roll pan.
  2. Brown the butter:
    • In a saucepan, melt 1 1/4 cups butter over medium heat until it becomes foamy and turns a light amber color. This will be used for both the bars and the frosting.
  3. Divide the hazelnut butter:
    • Measure out 1/2 cup browned butter for the bars and set aside. Pour the remaining browned butter into a mixing bowl, adding the additional 2 tablespoons cold butter to melt.
  4. Refrigerate for icing:
    • Place the mixing bowl containing the majority of the browned butter in the refrigerator to solidify for the frosting.
  5. Prepare the banana bread dough:
    • In another bowl, combine the reserved 1/2 cup brown butter, granulated sugar, and brown sugar. Stir in eggs, sour cream, mashed bananas and vanilla.
    • Add the baking soda and salt, then gradually stir in the flour until well combined.
    • Divide the batter evenly into the prepared pan.
  6. Cook:
    • Bake for 25 to 30 minutes or until a toothpick inserted in the center comes out clean. Let cool.
  7. Prepare the icing:
    • Once the browned butter has solidified but is still soft, using a mixer, gradually incorporate the powdered sugar, followed by the vanilla and milk, until you obtain a smooth and creamy consistency.
  8. Frost and finish:
    • Spread frosting over cooled bars. Let the frosted bars set at room temperature for about 30 minutes before slicing.

Enjoy these luxurious Brown Butter Banana Bread Bars, a delicious treat that combines classic comfort with a touch of indulgent sophistication!

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