Beefy Mac-and-Cheese

Also a simple recipe -- a nice upgrade to mac-and-cheese that doesn't take a long time or much effort.

Beefy Mac-and-Cheese

1 lb. Ground Beef
1 can Diced tomatoes with green chilis
1 can Mushrooms -- drained
4 oz. Velveeta -- cubed
1/4 cup Butter
1/2 cup Milk
1 box Macaroni and cheese mix

Cook noodles from macaroni and cheese. Meanwhile, brown beef and drain fat. Stir in remaining ingredients, including cheese pack from mac-and-cheese box. Heat to boiling. When noodles are done, add them to meat mixture.