Go to the Krusty Krab and chase the walking patty to the Chum Bucket. The patty will grow to ten times its size. Just hit the parts sticking out, then hit the patty with the spatula onto the grill. You then have to find a Copepod (shrimp-like creature) to eat Plankton, then a Anchovy to eat Copepod, then a Tuna to eat Anchovy, then Hans to eat Tuna, in ten minutes.