Coffee Cake with Streusel Topping

1 1/2 c All-purpose flour

1 c Sugar

3 ts Double acting baking powder

1/4 ts Salt

1 c Sour cream

1/2 ts Vanilla extract

2 Eggs

------------------------------STREUSEL TOPPING------------------------------ 2 tb Flour

2 tb Unsalted butter

2 tb Sugar

3 tb Brown sugar

PREHEAT OVEN TO 350F. Combine all ingredients in a mixer and mix until all ingredients are incorporated. Do not over mix. Pour batter into a 9-by-9-inch lightly greased cake pan, and cover with streusel topping

(RECIPE Follows). Bake about 20 minutes. STREUSEL TOPPING: PLACE ALL INGREDIENTS together in a mixer and mix until crumbled.