Here's your ingredients
Split the frosting into two bowls and add red coloring to one (ketchup) and yellow to the other (mustard). In a third bowl add a few drops of green food coloring to the coconut (lettuce).
Crack an egg and put just the white in a bowl. This is to brush the top of a wafer with and then sprinkle on the sesame seeds to look like the top of a hamburger bun.
Next time you need to bring a dessert to pass give these a try. Quick, cute and no cooking... can't get better than that!