1 pkg. (2-layer size) white cake mix
1 pkg. (3 oz.) JELL-O Strawberry Flavor Gelatin, or any red flavor
1 tub (8 oz.) COOL WHIP Whipped Topping, thawed
1/4 cup seasonal colored sugar or sprinkles
1. Heat oven to 350ºF.
2. Prepare cake batter as directed on package. Stir in dry gelatin mix until blended; spoon into 24 paper-lined muffin cups, filling each cup half full.
3. Place small marble or 1/2-inch ball of foil between each liner and side of muffin cup, pushing liner into batter to form a heart shape.
4. Bake 20 to 22 min. or until toothpick inserted in centers comes out clean. Cool completely; remove marbles or foil balls.
5. Frost cupcakes with COOL WHIP. Decorate with sugar.