1/4 lb. butter
1 c. granulated sugar
2 eggs
1 c. sour cream
1 tsp. vanilla
2 c. flour
1 1/2 tsp. baking powder
1 tsp. baking soda
1 c. chocolate chips
1/2 c. granulated sugar
1 tsp. cinnamon

Preheat oven to 350 degrees. Cream butter, 1 cup sugar and eggs. Add sour cream and vanilla. Sift flour, baking powder and baking soda. Add dry ingredients to butter mixture and beat. Pour half of this batter into a greased 9x13x2 inch pan.

In a separate bowl, mix 1/2 cup sugar, cinnamon and chocolate chips, spooning half of this mixture over cake batter. Pour in remainder of cake batter (it will be thick) and spread. Top with remainder of chip mixture. Bake for 25 minutes or until toothpick inserted in middle comes clean.