The chocolate sour cream drops cookie recipe mingles dark chocolate with the richness of sour cream, topped with a chocolate butter frosting!   Ingredients 1 stick (1/2 cup) salted butter, softened 1 cup packed brown sugar 1/2 teaspoon baking soda 1/4 teaspoon salt 1 large egg 1 teaspoon vanilla extract 2 ounces unsweetened baking chocolate, […]