beef and potato burritos

I tried this recipe last week from Martha Stewart with a few changes. Fast easy and a little different.

1 large baking potato
2 tablespoons vegetable oil, such as safflower
3/4 pound ground beef
1 onion, chopped
1/2 tsp dried chili flakes
1 can (14 ounces) chopped tomatoes with juice
1 1/2 teaspoons ground cumin
2 teaspoons paprika
Coarse salt
4 flour tortillas (10-inch)
1/4 cup sour cream
1/2 head iceberg lettuce, shredded
1/4 cup grated cheddar cheese
1/4 cup fresh cilantro (optional)
1 lime, plus wedges for garnish
Directions
Peel potatoes; cut into 1/2-inch dice. In a large saucepan, heat oil over medium heat. Add potato; cook, stirring occasionally, until golden brown, about 6 minutes.
Add beef, onion, and chili pepper flakes; cook, breaking up meat with a spoon, until beef is thoroughly browned, about 4 minutes. Add tomatoes and juice, cumin, paprika, and 1 teaspoon salt; cook until liquid has evaporated, about 6 minutes.
Heat tortillas, one at a time, in a dry skillet over medium-high heat, turning once, until lightly browned, about 10 seconds.
Leaving space on bottom and sides, layer tortillas with sour cream, lettuce, beef mixture, cheese, and cilantro, if using; squeeze lime juice on top. Fold bottom upward, covering filling by 2 inches. Fold each side to overlap, leaving the top end open. Serve garnished with lime wedges.