My family begs for this frequently so I decided to put it on 'paper' as its just been in my head for all these years!
This makes a 9x13 panful and serves 3 hungry guys and me for one meal.
6 cups cooked elbow macaroni - (3 cups dry yeilds 6 cups cooked)
In a medium mixing bowl add:
1/2 cup parmesan cheese
1/3 cup flour
2 cups each of the following cheeses, cubed about 1/2" cubes: sharp cheddar, monteray jack and mozzarella
1 cup cubed swiss cheese
Coat the cheese cubes well and in your 9x13 lightly greased pan layer cooked macaroni and cheese cube mix ending with macaroni.
Pour in milk until it is visible through the macaronis. Do not add too much but do check it while it is cooking to be sure it does not dry out.
In a bowl or ziplock baggie, crush ritz or club crackers to equal about 2 cups. Add 1/3 cup melted butter and stir well, with your hand sprinkle the cracker/butter mix over the top of the macaroni, cover with foil and bake at 350 degrees for about 20-30 min, checking it about half way through. If it is getting dry you can add a little more milk but be sure that everything is well heated and the cheeses are melted.
When the cheeses are well melted, uncover and turn on the broiler for about 3 min or so to brown the cracker / butter topping slightly. Watch this carefully while the broiler is on as it will burn fast.
Remove from oven and let sit for about 3 min to let the cheese set up. Cut into squares and serve with a large spatula.