1 (12 oz.) bag chocolate chips
1/2 lb. butter
1 c. sugar
2 eggs
1 c. sour cream
1 tsp. vanilla
2 c. flour
1 1/4 tsp. baking powder
1 tsp. baking soda

SUGAR MIXTURE:

1/2 c. sugar
1 tsp. cinnamon

Beat together butter, sugar and eggs. Add sour cream, vanilla, flour, baking powder and baking soda. Spread 1/2 of batter in greased, floured 9 x 13 pan. Sprinkle with half of sugar mixture and half bag of chocolate chips; then repeat. Bake at 350 degrees for about 30 to 35 minutes.