A tasty sour cream coffee cake with a streak of chocolate chips in the middle.
1 Preheat oven to 350 degrees F (175 degrees C) grease and flour a 9×13 inch pan.
2 In a medium bowl, stir together the flour, baking powder and soda. Set aside.
3 In a large bowl, cream the butter and 1 cup of sugar. Add eggs, sour cream and vanilla. Mix well.
4 Add the flour mixture and combine. Batter will be thick.
5 In a separate bowl, combine chocolate chips, 1/2 cup sugar and cinnamon. Set aside.
6 Spread half of the cake batter in prepared 9×13 inch pan. Sprinkle half of the chocolate chip mixture over the batter. Repeat with the remaining batter, and then the remaining chocolate chip mixture.
7 Bake at 350 degrees F (175 degrees C) for 25-30 minutes or until a toothpick inserted near the center comes out clean.