Preheat the oven to about 400 degrees F before baking the mac and cheese.
Take a large pot full of water. Mix the salt in the water and boil it. When the water starts to boil add the macaroni into the water.
Cook macaroni for about 8-10 minutes until it cooks as dente. Use a drainer ad drain off the water from the macaroni and put it aside.
Take a large bowl and mix all the ingredients like (cheddar cheese, mozzarella cheese, pinch of salt, and black pepper).
Add the cooked macaroni into the large bowl and mix it until all the ingredients are combined well.
Take a baking dish about the size 8x8. Grease the baking dish with the butter or oil spray.
Spread the macaroni on a baking dish and spread it evenly on the dish.
Sprinkle at the top of the macaroni with extra cheddar cheese or black pepper.
Put the baking dish into the preheated oven and bake it for about 20-25 minutes until the top of it become golden brown color.
Remove it from the oven. Let it to be cool for about 5 minutes after removing it from the oven.
Serve it and enjoy!