Because macaroni will cook more in oven do not cook throughly, i leave it quite hard. Drain . In same pot put stick of butter and milk and half & half,melt butter with milk products.
Place Macaroni in pot and mix well and put 3 cups of the cheese, mix well.
Place in casserole baking dish and place the last cup of cheese on top spread evenly. More if you like. Bake at 350 for 1 hour . I let it sit about 10 minutes before serving. With any leftovers I put in fry pan and cook until crusty and have for another meal. My husband prefers this!!!!!