1 lb. beef sirloin cubes, raw
1 sm. onion, chopped
1 clove garlic, minced (or equal amount of garlic powder)
1 can cream of mushroom soup, undiluted
2 tsp. Worcestershire sauce
1/2 of 4 oz. can sliced mushrooms, drained
8 oz. sour cream

Combine all ingredients except sour cream in crockpot. Cook on low for 8 to 10 hours. Stir in sour cream until well blended. Serve over rice or noodles.