Cook ground beef in a skillet until browned. Drain excess fat.
Add taco seasoning to the beef, stir well, and season with salt and pepper.
Warm tortillas slightly in a skillet or microwave to make them pliable.
Spread nacho cheese sauce evenly over each tortilla.
Layer the seasoned beef, shredded cheese, sour cream, and diced tomatoes onto each tortilla.
Roll burritos tightly, folding in the sides to seal.
Optional: lightly toast burritos in a pan or air fryer until golden and crispy.