Make mummy shell. Melt Candy Melts candy according to kit directions. Use melted candy and cut decorating bag to pipe a thin coat inside mummy mold. Use brush to paint sides with melted candy to form shell, 1/8 in. thick. Chill until firm 5 to 7 minutes.
Make mummy. Prepare no-bake pop mix and fill mummy shell according to kit directions. Use melted candy and cut decorating bag to cover top. Tap to settle. Chill until firm 5 to 10 minutes.
Assemble treats. Unmold mummy. Use warm knife to smooth edges. Use melted candy and cut decorating bag to attach candy eyeballs. Chill until firm, 3 to 5 minutes.
Make brownies. Prepare batter following recipe directions.
Bake and cool brownies. Use knife to cut into rectangles, 2 1/2in. x 4 in. Remove from pan. Use spatula and chocolate icing to ice smooth. Position mummy on brownie.