Marble Cookies

2 C flour ½ C butter
½ tsp. baking powder 1 egg
¼ tsp salt ½ C sour cream
½ C packed brown sugar 1 tsp vanilla
½ C sugar 1 C chocolate chips

Combine sugars and butter and beat until creamy. Add egg, sour cream, and vanilla; beat until light and fluffy. Add dry ingredients until just combined. Melt chocolate chips microwave on high, stirring every 20-30 seconds. Pour chocolate over cookie batter. Lightly fold chocolate into batter. Do not mix chocolate completely into batter. Bake cookies at 350 degrees for 10 minutes. Makes 2 ½ doz.