Preheat oven to 350 degrees. Grease and flour 9 x 13 pan.

6 tbsp. soft butter
1 c. sugar
2 eggs
1 1/2 tsp. baking powder
1 1/3 c. flour
1 tsp. baking soda
1 tsp. cinnamon
1 c. sour cream
1 (6 oz.) pkg. real chocolate chips

Blend butter and sugar. Beat in eggs, one at a time. Mix dry ingredients together and sift in. Add sour cream, blend until smooth, spread in pan. Sprinkle chocolate chips and 1 tablespoon sugar over top. Bake 35 minutes.