Using a vegetable peeler, peel very thin slices of your veggies for the rainbow side. Place all in a bowl with water, and heat for 3-4 minutes. Allow to cool. Check here, for photographed instructions for your rainbow side!
Assemble sandwich of peanut butter and apple slices, then put sandwich into a sandwich press. If you do not have a sandwich press, then grill in a medium skillet and press sandwich with another pan.