Step 1

Grease a 13 x 9-inch baking dish. Spread half of the pasta in the bottom of the dish.

Step 2

Sprinkle with half of the cheese, dot with half of the butter, and sprinkle with half of the salt.

Step 3

Repeat the layers using the remaining macaroni, remaining cheese, remaining butter, and remaining salt.

Step 4

Pour milk evenly over top.

Step 5

Cover with aluminum foil, and refrigerate overnight (about 12 hours, or up to 24 hours).

Step 6

Bake, covered with foil, at 350°F (180°C) for approximately 45 minutes. Remove the foil during the final 10 minutes to allow top to brown. For a really crispy top, place the dish under the broiler for a couple of minutes at the end.