Brown meatballs and mushrooms in butter in a large skillet.

While the meatballs are browning, cook pasta according to package directions.

Over low heat, add worchestershire sauce and milk until mixed in well to the meatball/mushroom mixture

Next, add in cream of mushroom soup and stir

Last, add sour cream and combine well

Once the pasta is done cooking, drain well and add to the meatball mixture in the large skillet

Serve immediately