Ingredients:
2 cups ultra-lightweight spackle
1 cup dry plaster of paris
3 tbsps water (plus more)
8" round x 4" high styrofoam cake form (hatboxes work well)
Glossy latex paint
Excelsior (optional)
Tools:
Kitchen timer
Small bucket
10" frosting knife
Paintbrush
MAKE IT
1. Set your timer for 15 minutes (that’s how long you have before the “icing” sets, so you need to work fast).
2. In a small bucket, mix the spackle, plaster of paris, and water using the frosting knife. Start with three tablespoons of water and continue adding more until you reach a smooth consistency. The icing should be light and fluffy, and not too wet or blobby.
Starting with the sides first-and using a liberal hand-frost the cake form.
Let it set overnight.
3. The next day, when the icing is dry to the touch, paint the cake (see tip).
Give to sweet-toothed friends.
TIP: Use brown paint for chocolate, yellow for lemon, green for pistachio, or cream for French vanilla. For toasted-coconut shavings, add cut-up pieces of excelsior to the wet paint.