What You'll Need:
1 1/4 cups granulated sugar
1/2 stick (1/4 cup) butter, softened, plus another 1/2 stick butter
1 cup sour cream
1 1/2 cups mashed ripe bananas (about 4 bananas)
3 teaspoons vanilla extract, divided
2 1/4 cups all-purpose flour
1 teaspoon baking soda
1/2 teaspoon salt
1 cup light brown sugar
1/4 cup milk
2 cups confectioners' sugar
DirectionsWhat To Do:
Preheat oven to 350 degrees F. Coat a 9- x 13-inch baking dish with cooking spray.
In a large bowl with an electric mixer, beat granulated sugar, the 1/2 stick softened butter, sour cream, and eggs until creamy. Beat in bananas and 2 teaspoons vanilla. Add flour, baking soda, and salt; mix well. Pour into baking dish.
Bake 30 to 35 minutes, or until toothpick inserted in center comes out clean. Let cool.
In a small saucepan over medium heat, melt remaining 1/2 stick butter. Stir in brown sugar and milk and bring to a boil, stirring constantly. Reduce heat to low and cook 2 minutes. Remove from heat and place in a large bowl. Let cool 15 minutes.
Add confectioners' sugar and remaining 1 teaspoon vanilla to bowl and beat with electric mixer until smooth. Spread frosting over cake and serve.