1/4 lb. butter, softened
1 c. sugar
2 eggs
1 c. sour cream
1 tsp. vanilla
2 c. flour
1 1/2 tsp. baking powder
1 tsp. baking soda
1 1/2 c. chocolate chips
1/2 c. sugar and 1 tsp. cinnamon, mixed together

Cream butter; add sugar and eggs. Blend in sour cream, vanilla, flour, baking powder, and baking soda. Spread half of batter in greased 13 x 9 pan. (Batter will be thick.)

Sprinkle with half of cinnamon/sugar mixture, then half the chocolate chips. Spread remaining batter on top, then sprinkle with remaining cinnamon/sugar and chips. Bake 30 minutes at 350 degrees.