As a child this was and still is my favorite cake, it is a really moist and tasty cake as well, ok lets get started, I assume that everyone knows that all ingredients should be at room temperature.
½ pound butter
4 eggs
1-1/2 cups sugar
1 cup sour cream
½ cup mashed ripe bananas
1 teaspoon baking powder
1 teaspoon baking soda
1 teaspoon vanilla
3 cups flour