Cook the ground beef in a large skillet over medium heat until browned and no longer pink. Drain excess grease.

While the beef cooks, prepare both boxes of Velveeta shells & cheese according to the package instructions.

To the cooked beef, add the taco seasoning and Rotel tomatoes (with liquid). Stir and simmer for 5 minutes to blend flavors.

Mix the seasoned beef mixture into the prepared mac & cheese until fully combined.

Serve hot or divide into containers for meal prep.