Jigglers 2 large boxes gelatin, any flavor 2 1/2 cups boiling water Mix well and pour into a 13 x 9-inch pan. Chill in refrigerator for at least 3 hours before cutting into any desired shapes with cookie cutters or knives. Or you can pour into plastic molds. Dip bottoms of molds and bottom of pan into warm water for a few seconds before removing.