Crushed Oreo or other chocolate cookies, I used Trader Joe's Jo-Jo's
See-through plastic cups, 8-12 ounce size
Black permanent marker
Large M&M's, like peanut M&M's and black frosting (optional)
Make homemade pudding or pudding according to recipe or package instructions. Let cool completely, if needed. When ready to assemble, make a monster face on the outside of the plastic cup with a permanent black marker.
Fill each cup to within 1/4-inch of the top with green pudding. Top the pudding with crushed cookies. If desired, put a dab of black frosting on each side of the cup and attach a large M&M for ears or Frankenstein "bolts." Refrigerate until ready to serve.
Pudding: you can sub your own vanilla pudding recipe or the boxed variety, although the amount of pudding you end up with will probably vary. Simply adjust the other ingredients (like the cookie crumbs) accordingly. It isn't rocket science...it will all work out.