Step 1: Gather your Ingredients
Yellow Cake Mix (Bun)
Chocolate Cake Mix (Burger and chocolate Shake)
Apple (Red Onion)
Mint Leaves (Lettuce)
Lemon or lime (to keep fruit from browning)
Aluminum cupcake liners (this way you don't need a muffin tin)
Party Picks (to test the cupcakes and also to hold them together)
To make the whipped cream for the shakes
Missing are water, straw, and sesame seeds.
Step 2: Preheat Grill/Oven and Prepare the Cake Mix
Make both the yellow and chocolate cake mixes as according to the directions on the box.
Use a tablespoon and spatula to carefully fill your cupcake liners. I used about 3.5 heaping tablespoons to fill these. They were a wee bit too full. I recommend going scant on this so they don't overflow. In either case it doesn't really matter as you will be cutting these up, but it is less wasteful if you don't fill them too full. Go 1/2 to 2/3 full.
Step 3: Put your Cakes on the Grill
I preheated only one side of the grill and placed the cupcakes on the other side so the bottoms wouldn't get scorched.
Use a spatula to transfer the cupcakes from the plate to the grill.
Close the lid and wait 20 minutes.
At this point I like to go and wash all of my bowls etc to kill 20 minutes or so.