Cut Oyster mushrooms into slices 1/4 inch thick. Add a small amount of oil or butter to pan over medium-high heat. Add oyster mushrooms. Cook in open pan to allow excess moisture to evaporate, stirring often. Once most of the moisture is reduced, add oil or butter and continue to sauté until mushrooms have reached desired consistency. They are excellent when onions are added at this stage and enjoyed simply over eggs, potatoes, or pasta. Oyster mushrooms substitute nicely into a variety of recipes like risotto, soups, stir fry, cream or marinara sauce, filling for tacos or enchiladas, in quiche or omelets or as a garnish for steak.