Instructions
1. Prepare the batter
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Preheat oven to 375°F (190°C). Grease a 13 x 9-inch baking pan.
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In a large bowl, beat together sugar, sour cream, butter, and eggs until creamy.
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Mix in the mashed bananas and vanilla extract.
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Add flour, baking soda, and salt. Blend for 1 minute, then fold in chopped walnuts.
2. Bake the brownies
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Spread the batter evenly into the prepared pan.
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Bake for 25 minutes or until golden brown.
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Allow brownies to cool slightly until warm (not hot) before adding frosting.
3. Prepare the frosting
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In a large saucepan, melt the butter over medium heat until it turns a golden brown color. Watch carefully to avoid burning.
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Remove from heat, whisk in powdered sugar, and gradually add milk until smooth and spreadable.
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Stir in vanilla extract.
4. Frost and serve
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Pour the frosting over the warm brownies and spread evenly with a spatula.
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Allow to cool completely before cutting into squares.
Recipe Notes
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For extra crunch, toast the walnuts before adding them to the batter.
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If you prefer a lighter version, you can replace sour cream with Greek yogurt.
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Store leftovers in an airtight container at room temperature for up to 3 days.
⏱ Prep Time: 15 minutes
🔥 Cooking Time: 25 minutes
⏳ Total Time: 40 minutes
🍽 Servings: 12
⚡ Calories: ~350 kcal per serving
