If you love mushrooms, this mushroom Swiss burger is a must-try. Start by sautéing sliced mushrooms in butter until they are golden brown and tender. Season them with salt, pepper, and a pinch of thyme. Set the mushrooms aside. Season ground beef with salt, pepper, and Worcestershire sauce. Shape the mixture into patties and grill them on a hot grill or cook them in a skillet over medium heat. While the burgers are cooking, melt some Swiss cheese on top of each patty. Toast the buns and assemble the burgers with the cooked mushrooms. Serve this mushroom Swiss burger with a side of sweet potato fries or a green salad for a flavorful and satisfying dinner.