Heat a large skillet over medium-high heat. Cook and stir beef in the hot skillet until browned and crumbly, 5 to 7 minutes. Add minced garlic and cook another minute until it just starts to be fragrant.
Stir pasta and cheese mixture from macaroni and cheese package into beef. Stir in canned tomatoes, and evaporated milk. Bring to a boil, reduce heat to medium-low, cover, and simmer until noodles are tender, stirring occasionally. About 10-12 minutes.
Season with seasoning salt. Stir ½ of the Cheddar cheese into dish to melt. Top with remaining cheese.