In a medium skillet, heat over medium heat and add the ground beef. Cook for about 6-8 minutes, breaking it apart with a spatula until browned and thoroughly cooked.

Once drained, return the skillet to low heat and sprinkle the taco seasoning over the beef. Add water as per seasoning packet instructions.

While the beef is simmering, prepare the rice according to the package instructions, then fluff and combine with the seasoned beef.

Lay out a large flour tortilla and spoon a generous portion of the beef and rice mixture down the center. Drizzle with nacho cheese sauce, sprinkle with cheddar cheese, and add sour cream.

Fold in the sides of the tortilla and roll it up tightly from the bottom, seam-side down on a plate.

Optionally, grill the burrito in a non-stick skillet over medium heat for 2-3 minutes per side until golden brown and crispy.