You just made a casserole for dinner, and now that it has all been eaten you are left with a baked on mess. You have tried almost everything, but your elbow grease is just about all used up. What else is there to do?
From your laundry room, grab a sheet of fabric softener (2 or 3 for larger pans).
Place it in your casserole dish and fill with water.
Let sit for at least 20 minutes.
Now just grab your scrubber and the mess should clean right off.