Prep: Preheat your oven to 350°F. Lightly coat a 9x13 baking dish with non-stick spray.
Sauté: Brown the ground beef in a skillet over medium heat. Drain the excess fat.
Season: Stir the diced green chilies, salsa, and cumin into the beef. Mix well to ensure the meat is fully seasoned.
The Mash-Up: In a large mixing bowl, pour in the tortilla chips. Gently break them up with your hands (don't crush them into dust; you want bite-sized pieces).
Fold: Add the beef mixture, the entire can of enchilada sauce, and 1 cup of the shredded cheese to the chips. Gently fold everything together until the chips are well-coated.
Bake: Pour the mixture into your prepared baking dish. Sprinkle the remaining 2 cups of cheese over the top.
Cover & Cook: Cover the dish tightly with foil. Bake for 50 minutes until the cheese is melted and the sauce is bubbling.
Rest: Let it stand for 5 minutes before serving to allow the chips to finish absorbing the sauce.