Slime-filled cupcakes

Slime-Filled Cupcakes
1 pkg. (18-1/4 oz.) chocolate cake mix
FILLING:
1/4 cup shortening
3 Tbs. butter, softened
2 cups confectioners' sugar
2 Tbs. milk
8 drops green food coloring, optional
FROSTING:
1/2 cup butter, softened
4 oz. cream cheese, softened
2 cups confectioners' sugar
1/4 cup baking cocoa
2 Tbs. milk
GLAZE:
1/2 cup confectioners' sugar
1 Tbs. milk
6 drops food coloring
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Prepare cake mix batter according to package directions; fill 24 paper-lined muffin cups. Bake at 375° for 20-22 minutes or until a toothpick comes out clean. Cool for 5 minutes before removing from the pans to wire racks to cool completely.

For filling, cream the shortening, butter, confectioners' sugar, milk and food coloring until light and fluffy. Cut a small hole in the corner of a pastry or plastic bag; insert #7 round tip. Add filling. Push the tip through the bottoms of paper liners to fill cupcakes (the top of the cupcakes will begin to expand when they are full.)

In a small mixing bowl, combine the frosting ingredients; frost cupcakes. Combine glaze ingredients; drizzle over frosting.