CAKE:

1 1/2 sticks butter
1 1/2 c. sugar
3 eggs
1 1/2 tsp. vanilla
3 c. flour
1 1/2 tsp. baking soda
2 1/4 tsp. baking powder
1 1/2 c. sour cream

TOPPING:

8 oz. chocolate chips
3/4 c. sugar
1 1/2 tsp. cinnamon

Cream together butter, sugar and vanilla. Add eggs and sour cream. Mix flour, baking soda and baking powder; add to creamed mixture. Pour 1/2 of the batter into a greased 9"x13" pan. Mix 3/4 cup sugar and 1 1/2 teaspoons cinnamon. Sprinkle 1/2 of the sugar and cinnamon mixture and 1/2 of the chocolate chips on the batter in pan. Top with remaining batter and then with remaining topping mixture and chips. Bake at 350 degrees for 40 minutes. Makes a 9"x13" cake.