1/2 lb. macaroni
1 tsp. butter
1 egg, beaten
1 tsp. salt
1 tsp. dry mustard
3 c. grated cheddar cheese, sharp
1 c. milk

Boil macaroni in water until tender and drain thoroughly. Stir in butter and egg. Mix mustard and salt with 1 tablespoon hot water and add to milk. Add cheese, leaving enough to sprinkle on top. Pour into buttered casserole dish, add milk, sprinkle with cheese. Bake at 350 degrees for 45 minutes.