Ingredients
Equipment
Method
Step-by-Step Instructions
- Preheat your oven to 375°F (190°C). Grease a 15x10-inch jelly roll pan and sprinkle with flour.
- In a large mixing bowl, combine sugar, sour cream, melted butter, and eggs, and beat on medium speed for about 2 minutes.
- Stir in the mashed ripe bananas and vanilla extract until just combined.
- Sift in the all-purpose flour, baking soda, and salt, and fold until just combined. If using, fold in chopped walnuts.
- Pour the batter into the prepared pan and bake for 20 to 25 minutes until edges pull away and a toothpick comes out clean.
- In a saucepan, melt the butter over medium heat, stirring until golden brown. Remove from heat and whisk in powdered sugar, vanilla, and milk until smooth.
- Spread the warm brown butter frosting over the brownies once cooled slightly, then allow them to cool completely before slicing.
Nutrition
Notes
Store the cooled brownies in an airtight container at room temperature for 2-3 days or refrigerate for up to 5 days.
