12 cups popped popcorn
14 ounces sweetened condensed milk
1 package (4 serving size) gelatin, any flavor

Heat oven to 300°F. Line large shallow roasting pan with foil, extending foil over edges of pan. Butter foil. Pour popcorn into prepared pan. Keep warm in oven. Combine milk and gelatin in saucepan. Heat and stir over medium heat 4-5 minutes till mixture is slightly thickened and bubbly. Pour over popcorn and stir gently to coat. Bake 20 minutes, stirring every 5 minutes. Carefully turn out onto lightly buttered foil. Cool and break into pieces and clusters. Store loosely covered at room temperature.