Chocolate Bar Filled Chocolate Cupcakes Ingredients 3 cups all-purpose flour 2 tablespoons white vinegar 3 (1.55 oz. each) HERSHEY'S Milk Chocolate Bars , broken into sections 2 teaspoons vanilla extract 1 teaspoon salt 2 cups water 2/3 cup vegetable oil 2 teaspoons baking soda 2 cups sugar 2/3 cup HERSHEY'S Cocoa CHOCOLATE BAR FILLING