Fold a 12-inch square sheet of aluminum foil in half, turn and fold in half again; you should have a small square. Now, fold diagonally and once more again. You will now have a triangle. Wrap it around your index finger and mold into a cone shape. Repeat 9 more times to make 10 molds. (Note: these can be reused.) Lightly spray the foil molds with nonstick spray.