In large pot, combine pasta and water. Cook over medium-high heat 20–22 minutes, or until pasta is done, stirring occasionally.
In bowl, combine 2 cups cheddar cheese, Pecorino Romano cheese and corn starch.
Reduce heat to medium; stir milk, cheese mixture and sauce together with cooked pasta (do not drain pasta; the starchy pasta water helps create an extra-rich sauce). Cook 5–7 minutes, or until cheese is melted and mixture is thickened, stirring frequently.
Sprinkle with remaining cheddar cheese and pepper; serve immediately.
Having items on hand can make rushed weeknight cooking less overwhelming, giving you more time to spend with your family. Here's another quick go-to for a fast weeknight supper: Mini Turkey Sloppy Joes.
{ampz:Custom share for module}