In a large skillet over medium heat, brown ground beef, breaking it apart with a spatula as it cooks. Season with taco seasoning.

Add cooked rice directly into the skillet, stirring to combine all ingredients. Cook for about 2-3 minutes.

Sprinkle shredded cheddar cheese over the beef and rice mixture, stirring gently to help the cheese melt.

On a warm flour tortilla, place a scoop of the beef, rice, and cheese mixture in the center. Drizzle with nacho cheese sauce and add a dollop of sour cream.

Fold the sides of the tortilla inward, then roll tightly from the bottom up to encase the filling. Cook in a skillet until golden brown and crispy.

Remove burrito from the skillet, let cool for a minute, then cut in half and serve.