Preheat oven to 350 degrees and take out an 9×13 baking dish
Add the pasta into the baking dish then pour the milk on top followed by 1 cup of the shredded cheddar cheese and mozzarella cheese and butter then mix
Cover with foil then put in oven to bake for 45 minutes
Remove from heat and spread the additional 1 cup of cheddar cheese on top and bake in oven for another 15 minutes or until cheese is golden and bubbly