Stroganoff Sandwich
["1 lb. ground beef", "1/4 c. chopped onion", "1/4 tsp. garlic powder", "1/2 tsp. Worcestershire sauce", "1/2 c. sour cream", "4 oz. can sliced mushrooms, drained (optional)"]
["Brown ground beef with onion.", "Drain.", "Season with garlic powder, salt and pepper to taste and Worcestershire sauce.", "Remove from heat.", "Add sour cream and mushrooms."]
["ground beef", "onion", "garlic powder", "Worcestershire sauce", "sour cream", "mushrooms"]