Boil macaroni upto bite for 10 mins.
Drain it and keep it under tap water so that it does not get sticky and after that drain the excess of water.
Now take a kadai and put 1 tsp oil in it.
Now add chopped onion , garlic and butter in it.
Saute it for a min and then add tomato puree.
saute it for 4 to 5 mins.
Now add all the ingredients one by one so that it is mixed properly and easily.
Add milk also so that the sauce is combined to macaroni easily
Now stir it continuously and add olives and grated cheese.
Mix it properly that cheese is melted and make the macaroni cheesy.