1/2 lb. macaroni
1 tbsp. butter
1 egg, beaten
1 tsp. salt
pinch of cayenne pepper
1 tsp. dry mustard
3 c. grated sharp cheese
1 c. half and half

Boil macaroni in water until tender and drain thoroughly. Stir in butter. Mix mustard and salt with 1 tablespoon hot water and add to half and half. Add beaten egg. Mix in cheese, leaving enough to sprinkle on top. Pour into a buttered casserole and sprinkle with cheese.

Bake at 350°F for 45 minutes or until custard is set and top is crusty.