In a skillet over medium heat, brown the ground beef until fully cooked, breaking it apart with a spatula as it cooks. Drain any excess fat for a leaner filling.

Sprinkle the taco seasoning over the cooked beef, then add a splash of water. Stir and let it simmer for a few minutes until the flavors meld together and the mixture thickens slightly.

Warm the flour tortillas in a pan or microwave until they are soft and pliable, making them easier to wrap.

Layer the seasoned beef, shredded cheese, and nacho cheese sauce on each tortilla. Add a dollop of sour cream if desired, then fold in the sides and roll up tightly.

Place the assembled burritos seam-side down in a skillet over medium heat. Cook until golden brown and crispy, about 2-3 minutes on each side. This adds a lovely texture to the outside.