Add onions. I cooked the patties, removed to a plate. Sautéed mushrooms and onions in same pan, added lemon juice, Cavenders Greek seasoning, s & p, removed to a bowl. Then made gravy using extra of everything so I’d have lots of gravy. Just in tasting, I don’t think I will add ketchup to the gravy next time. Added patties and mushrooms/onions back in.
