Cream one cup of butter and 2 cups of sugar. Beat in 2 eggs, fold in one cup sour cream 1 teaspoon vanilla. Add two cups of flour, 1teaspoon of baking powder, and 1/2 teaspoon of salt and beat until smooth.
Spoon half of mixture into greased cake pan or even angel food pan. Sprinkle with half of topping mixture. Add the remaining batter and cover with remaining topping.
Bake @ 350 degrees for 55-60 mins
Cool for 15 mins if you can