1/4 c. butter
1 c. sugar
2 eggs
1 c. sour cream
1 tsp. vanilla
1 tsp. lemon juice
2 c. flour
1 tsp. baking powder
1 tsp. baking soda
1/4 tsp. salt
1/3 c. sugar
1 tsp. cinnamon
Semi-sweet chocolate chips

Cream butter and sugar. Beat eggs and add to butter and sugar. Add sour cream, vanilla and lemon juice. Sift together flour, baking powder, soda and salt. Gradually add to sour cream mixture. Pour half the batter into a 9 inch square pan that has been greased and floured. Sprinkle half the sugar, cinnamon and chocolate chips on top. Pour remaining batter and top with remaining sugar, cinnamon and chocolate chips. Bake at 350 degrees for 45 minutes.