Heat a large skillet over medium-high heat. Cook and stir beef in the hot skillet until browned and crumbly, 5 to 7 minutes.

Stir pasta and cheese mixture from macaroni and cheese package into beef. Stir in tomatoes, milk, peas, and corn; bring to a boil, reduce heat to medium-low, cover, and simmer until noodles are tender, about 12 minutes.

Season with seasoned salt. Stir 1/2 of the Cheddar cheese into dish to melt. Top with remaining cheese.