Add dry pasta, broth, milk, frozen broccoli, carrots, garlic powder, onion powder, salt, and pepper to a large pot or deep skillet.

Boil over high; reduce heat to medium and cook 12-15 minutes until pasta is tender and most liquid absorbed, stirring frequently.

Remove from heat; stir in cheddar and mozzarella until completely melted and creamy.

Stand 3-5 minutes to thicken; stir again and serve immediately.