Not to sound like a food snob or anything, but boxed Mac & Cheese has nothing on homemade. I've tried lots of recipes and this is my favorite.
I usually half this recipe for the 3 of us and we still have plenty for leftovers.
1 T plus 1 tsp salt
1 lb macaroni (I would put in more noodles. Like an extra cup)
5 T butter
6 T flour
1 1/2 tsp dry mustard
1/4 tsp cayenne pepper
5 cups milk
8 oz Monterey Jack cheese (2 cups)
8 oz cheddar cheese (2 cups) (or whatever you have on hand. I don't like all medium cheddar but mild is good)
1. Boil water. Add noodles and 1 T salt. Cook until tender. Drain and set aside.
2. In the now empty pot, melt butter over medium-high heat. Add flour, mustard, cayenne, and 1 tsp salt. Whisk to combine, about 1 minute. Add milk gradually while whisking constantly. Bring to a boil. Reduce heat to medium and simmer until consistency of heavy cream (5 minutes).
3. Off the heat, stire in cheeses until fully melted. Add pasta, stir, cook 6 minutes until heated through.
The recipe goes on and says to transfer to a broiler safe pan and broil the mac n cheese with bread crumbs on top. But I don't. Who wants to dirty another dish? So we top with crumbled saltines. Tasty!