Boil water in a pan, add 1 tsp salt, cook macaroni in it (8-9 min.) or as directed on pack. Drain water.
In a non-stick pan, add pasta Alfredo and milk. Stir and heat sauce (low flame). Add drained macaroni and toss.
Preheat oven to 180°C. Pour macaroni in a baking dish and top it up with grated cheese. Bake it in pre-heated oven for 1-2 minutes or until cheese melts. Serve hot.