When my son & wife moved into a rental house they found two Pampered Chef stoneware dishes in the oven. One was round and one rectangle; they both had been abused beyond use from their looks. The daughter in law was telling me about them and said she was not going to try and clean them and would ask the owner if they were hers and if she wanted them. I looked at them and told her if the owner did not want them I would try to clean them good enough to use on my smoker.
The owner said put them out with the trash; so I got them. I thought about soaking in baking soda water. Since it is porous I didn’t think I should use soap. I looked for tips on the net and one said run it through a self-cleaning cycle in the oven. My oven needed cleaning so I placed it on the rack upside down.
It came out looking like new! I really didn’t want to try to learn how to re-season it and cook with it. I took it over to the owner and she was tickled to death to get it back in new condition. I had a skillet I wanted to do so I put the second stoneware in with it and it came out great too.
Here are some before and after pics of the one I just did.
Before
Bottom after
After
Smokin Don