Surprise Red Cupcakes

Directions

1. In a heavy saucepan, combine 1/2 cup sugar, 3 tablespoons flour and milk until smooth. Bring to a boil; cook and stir for 1-2 minutes or until thickened. Remove from the heat; cool.
2. In a large bowl, cream 1/2 cup shortening and remaining sugar until light and fluffy. Add eggs, one at a time, beating well after each addition. Beat in the food coloring, vinegar and 1 teaspoon vanilla. Combine the cocoa, baking soda and remaining flour; gradually add to creamed mixture alternately with buttermilk, beating well after each addition.
3. Fill paper-lined muffin cups two-thirds full. Bake at 350° for 20-25 minutes or until a toothpick inserted in the center comes out clean. Cool for 10 minutes before removing from pans to wire racks to cool completely.
4. In a small bowl, beat butter and remaining shortening until smooth. Beat in the confectioners' sugar, cooled sugar mixture and remaining vanilla until light and fluffy, about 3 minutes. Insert a large round tip into a pastry or plastic bag; fill with filling. Insert the tip halfway into the center of each cupcake and fill with a small amount of filling.
5. For frosting, in a heavy saucepan, melt chips with 1/3 cup evaporated milk over low heat; stir until smooth. Remove from the heat. Beat in confectioners' sugar. Add enough remaining milk to achieve spreading consistency. Frost cupcakes.