Beef and Pasta Casserole

1	lb.	ground beef
1		onion, chopped
1	tsp.	salt
1/4	tsp.	garlic powder
1	tsp.	Worcestershire sauce
1/4	c.	flour
11/4	c.	hot water
2	tsp.	beef bouillon granules
2	tbsp.	red wine
1	pkg.	shell macaroni (6 oz.)
1	can	mushrooms, drained (4 oz.)
1	c.	sour cream

In skillet brown the ground beef and onion.  Drain; place in crock pot.  Stir in salt, garlic powder, Worcestershire sauce and flour.  Add water, bouillon and wine; mix well.  Cover and cook on low for 2-3 hours.  Cook macaroni per package directions.  Add cooked pasta, mushrooms and sour cream to Crockery Pot; stir to mix.  Cover and cook on high for 10-15 minutes.