1 box of white cake mix1/2 cup chocolate chips, melted1 tsp vegetable oilRed and green food coloring2 16 oz. cans of white frostingRed jelly heart candies1 tube yellow cake decorating gel3 8-inch round cake pansNonstick cooking spray1 red dripless candle and smaller dripless green candles (one for each child participating)1 piece of cardboard or heavy paper
Preheat oven to 350 degrees. Make cake mix according to package directions. Divide batter into three equal portions, about 11/4 cup each. Pour into three separate bowls.
Bottom layer (black):
Combine melted chocolate chips with vegetable oil and stir. Combine with one portion of the batter and mix. Pour into one of the cake pans.
Center layer (red):
Add 10 drops of red food coloring to one remaining bowl of batter and mix well. Pour into second pan.
Top layer (green):
Add 10 drops of green food coloring to remaining portion of batter and mix well. Pour into remaining pan.
Bake all three cake layers for 17 to 22 minutes. Check for doneness. When cakes are done, let cool for 15 minutes.
Use 2 cans of prepared frosting to generously frost all three cake layers. Stack them and finish frosting.
Place the red jelly hearts in a band around the perimeter of the cake. (If you can't find red jelly hearts, use a tube of red decorating gel to make the hearts.) Construct a six-point star out of cardboard or heavy paper and place lightly on top of the cake. Trace the star with the yellow decorating gel, remove the star, and fill in the outline of the star with the gel. Place the red candle in the center of the star and light.1