Easy Stroganoff

1 lb. ground beef
1 large onion, sliced
1 can sliced mushrooms (or fresh)
1 clove garlic, minced
1 can cream of mushroom soup
1-16 oz. container sour cream
¼ c. butter
Salt and pepper to taste

In skillet, brown ground beef. Remove hamburger and saute the onion until soft. Add butter, garlic, soup and mushrooms. Stir until coated. Add sour cream and mix well. Salt and pepper to taste. Serve over rice or noodles.