School Cafeteria Beef-A-Roni

School Cafeteria Beef-A-Roni 1 1/2 lbs. ground beef 1 small onion, chopped 1 1/2 tsp. chili powder 1/2 tsp. garlic powder good splash of worcestershire sauce 8 oz. can tomato sauce 3 T. ketchup salt and pepper to taste 1 1/2 C. dry large elbow macaroni, cooked in boiling water and drained well Brown the ground beef in a skillet, drain off the grease and add the onion, cook for 5 minutes to soften. Stir in the chili powder, garlic powder and worcestershire sauce. Stir in the tomato sauce and ketchup. Season with salt and pepper to taste then stir in the drained macaroni and combine well.