INGREDIENTS
1
Egg, large
1 tsp
Baking powder
1 tsp
Baking soda
1/2 cup
Chocolate chip, semisweet
1
Chocolate chips, Semisweet
1/3 cup
Cocoa powder, unsweetened
1 1/3 cups
Flour
1/2 tsp
Salt
1 cup
Sugar
1
Topping
1 1/2 tsp
Vanilla extract
1
Muffins
1/4 cup
Butter, unsalted
1/2 cup
Buttermilk, low-fat
3/4 cup
Vanilla yogurt, low-fat