Elm Oysters on Meatloaf Posted on December 10, 2015 by MycognosticSeptember 11, 2017 Elm Oysters fruiting on Wheat Straw and Fuel Pellets First Harvest of Elm Oysters. Line the loaf pan with butter and mushrooms. Add the meatloaf mix and bake till solid, then turn out on a rack over a pan. Bake until Golden. Serve with all the fixin’s.