Preheat oven to 400 degrees.
Blend: 1 tbsp. baking powder 1/2 tsp. salt, optional 1/3 c. brown sugar 1/3 c. sugar
Blend: 1/3 c. butter 1/2 c. milk 1/2 c. sour cream or yogurt 1 c. chocolate chips
Blend dry ingredients. Blend wet ingredients. Combine to moisten flour mixture. Add chocolate chips. Fill paper lined muffin tins full and bake 18-20 minutes. Makes 1 dozen.