Coffee Cake - cooking recipe

Ingredients

1 c. sugar
2 eggs
1 c. margarine
2 c. flour
1 tsp. baking powder
1 tsp. soda
1/2 tsp. salt
1 c. buttermilk (1 c. milk and 1 Tbsp. vinegar)
1 tsp. vanilla

Preparation

Mix ingredients; spread 1/2 batter into greased 9 x 13-inch pan.
Sprinkle 1/2 topping over batter.
Add remaining batter; sprinkle with rest of topping.
Bake at 350\u00b0 for 30 minutes, or until done.