Remove from heat, remove onions and reserve (do not clean pan, it will be used later to prepare the gravy). (fieryfoodscentral.com)
Without cleaning the pan, add the tomatoes, peppers and mushrooms. (myfussyeater.com)
I noticed in other comments that you prepare more than one; I have hopes of there being no need to clean the pan between each puff. (theinspiredroom.net)