1. Cook the ground beef in a skillet over medium heat until browned. Drain excess fat.
2. Add taco seasoning to the beef and cook according to the package instructions.
3. Warm the flour tortillas in a microwave or on a skillet for a few seconds to make them pliable.
4. Place a large tortilla on a flat surface. Spread a layer of nacho cheese sauce in the center.
5. Add a scoop of seasoned ground beef on top of the cheese sauce.
6. Place a corn tostada on top of the beef. Spread a layer of sour cream over the tostada.
7. Add shredded lettuce, diced tomatoes, and shredded cheese on top of the sour cream.
8. Fold the edges of the large tortilla up and over the center, creating pleats to seal the wrap.
9. Heat a skillet over medium heat. Place the wrap seam-side down and cook until golden brown and crispy, about 2-3 minutes per side.
10. Repeat with the remaining tortillas and fillings. Serve hot.