Melt 1/2 stick butter in 9 x 13 pan. Place round steak in pan. Add 1 beef bouillon cube in 1 cup hot water. Add 1 can cream of mushroom soup and 1 small can of mushrooms. Cover with foil. Bake at 350 degrees for 3-4 hours. Or put all ingredients in a crock pot and simmer all day.