I agree with scrubbing it with stainless steel scrubber. You don't want to soap it up because it strips everything and it can absorb the soap but once you scrub it like crazy put it in the oven and get it HOT. Then wash it with a little soapy water and dry it off quick and right back into the hot oven. Once it is cool check it and see if it is still sticky. If so repeat. If not oil it, and store it upside down where stuff can't stick to it. You'll have to wipe it out well before you use it next.