Spray oven cleaner all over your cookware and let it sit for an hour.
Scrub off the oven cleaner (You could use just a dry cloth here, but the Mr. Clean Magic Eraser really cleaned this well!)
After this, wash the cookware in hot water and Dawn Dish Soap.
Either place the cookware in the dishwasher for a cycle to make sure the oven cleaner is all removed, or rinse extremely thoroughly if you do not have a dishwasher.