Ingredients
Equipment
Method
Step-by-Step Instructions
- Prep the pan by greasing and flouring a 15x10-inch jelly roll pan. Preheat oven to 375°F (190°C).
- Combine wet ingredients in a large mixing bowl: sugar, sour cream, melted butter, and eggs until smooth, then stir in mashed bananas and vanilla.
- Sift in flour, baking soda, and salt. Fold until combined, adding walnuts if desired.
- Spread the batter in the prepared pan and bake for 20-25 minutes until golden and set.
- Make the frosting by browning butter in a saucepan, then whisk in powdered sugar, vanilla, and milk until smooth.
- Spread warm frosting over baked brownies, cool for 10-15 minutes, then slice.
Nutrition
Notes
Store leftovers in an airtight container at room temperature for up to 3 days or refrigerate for 5 days. Brownies freeze well for up to 2 months.
