This is a great idea for kid's party. This will make as many as you would like.

One box of Vanilla wafers
One box of Choocolate Mint Cookies
One tube of Yellow Frosting
One tube of Red Frosting
One egg white
Sesame Seeds

Take one vanilla wafer (with rounded side on bottom) and put the mint cookie on top and then along the edge put some of the Yellow Frosting (mustard) and then on top of the yellow put some red frosting (ketchup). Place another vanilla wafer on top (round side on top). Brush with a little egg white and sprinkle with sesame seeds. Kids will love them!!