Add cooked pasta, butter, milk, cheese, and pepper to a pan.
Cook over low heat, stirring occasionally until all cheese is melted, about 5 minutes.
Notes
This can be baked: Put macaroni and cheese in a greased casserole dish. Top this recipe with a crushed crumb topping or mild cheddar cheese. Bake at 350 degrees F until the topping of your choice is lightly browned, about 10 minutes.