I used a pyrex bowel to bake the top of the bun and 8" pans for the bottom bun and the burger. The burger is covered with chocolate cookie crumbs. The tomatoes are made from cookies with red icing, and the lettuce is green sugared gum drops rolled out thin. I used yellow frosting for the mustard and put pine nuts on the bun for sesame seeds. The eyes are marshmallows with chocolate M&Ms. I made this about 10 years ago for my son's birthday.