Homemade Mac n Cheese

This is a favorite at our house....

2 cups elbow macaroni
1/4 c butter
1/4 c flour
1/2 tsp salt
1/4 tsp pepper
1/4 ground mustard
1/4 tsp Worcestershire sauce
2 c milk
2 c shredded sharp Cheddar cheese (I use whatever we have, usually mild Cheddar...the recipe suggests mixing half cheddar and half spicy cheese for some adventure)

Cook macaroni. Melt butter over low heat. Stir in flour, salt, pepper, mustard and Worcestershire sauce. Cook over low heat, stirring constantly until smooth and bubbly. Add milk. Heat to boiling, stirring constantly. Boil and stir for 1 minute, remove from heat. Stir in cheese until melted. Add macaroni to sauce. Pour into 9x9 casserole dish. Bake uncovered at 350 for 20-25 minutes.