01 - Heat 1 tablespoon oil in a large skillet over medium-high heat. Add diced potatoes and season with salt, pepper, and garlic powder. Cook, stirring occasionally, until golden and crisp, approximately 12–15 minutes. Remove from skillet and set aside.
02 - In a mixing bowl, combine shredded cabbage, grated carrot, green onions, parsley, mayonnaise, Dijon mustard, apple cider vinegar, salt, and pepper. Toss thoroughly until all ingredients are evenly coated. Set aside to allow flavors to meld.
03 - Add remaining oil to the skillet and heat over medium heat. Add shredded corned beef and sauté for 2–3 minutes until heated through, stirring occasionally.
04 - Warm flour tortillas in a dry skillet for 30 seconds per side or microwave in a damp paper towel for 20–30 seconds until soft and pliable.
05 - Layer each tortilla with crispy potatoes as the base, followed by warm corned beef. Top generously with cabbage slaw and finish with a drizzle of sour cream.
06 - Serve immediately while tortillas are warm and potatoes remain crisp. Offer extra slaw on the side if desired.