Preheat oven to 350.

Bring macaroni to a boil in a large pot.

Grate the brick of cheese and set aside.

In a large mixing bowl, combine rotel (well drained), ham, and garlic.

Drain macaroni and fold into mixture a little at a time.

Melt 1 stick of butter in the bottom of a baking dish.

Make 3 layers of the mixture with cheese.

Beat 1 egg, milk, mustard, and red wine vinegar with a whisk and pour evenly over mixture.

Cover top layer with cheese and bake at 350 for 45 minutes.