Ingredients
Method
- Cut & season. Slice potatoes into ½-inch sticks; soak 30 min for extra crunch if time permits. Pat dry and toss with olive oil, garlic powder, onion powder, smoked paprika, salt and pepper.
- Bake. Arrange in a single layer on a lined sheet; roast at 425 °F (220 °C) for 25–30 min, flipping halfway, until deeply golden.
- Prep toppings. While fries bake, sauté diced onion and bell peppers 3–4 min in a drizzle of oil until slightly softened. Shred cheeses.
- Mix sauce. Whisk sour cream, mayonnaise, lemon juice, garlic powder and smoked paprika until smooth; set aside.
- Load & melt. Transfer hot fries to an oven-safe dish, blanket with cheddar and mozzarella; return to oven 3–5 min until cheese bubbles.
- Finish. Scatter sautéed veg, jalapeños, chili flakes and oregano over melted cheese, drizzle with smoky sauce, garnish with parsley. Serve piping hot.
Notes
Capacity planning: One sheet pan only—crowding kills crispness; scale to two pans for bigger parties.
Heat management: For a milder profile, seed the jalapeño and dial back chili flakes; for a bolder kick, swap cheddar for pepper jack or dust fries with cayenne pre-bake.
Make-ahead leverage: Sauce and chopped vegetables hold 24 h refrigerated; potatoes can be cut and water-soaked 3 h in advance.
Reheat protocol: 375 °F oven, 8–10 min—never microwave—to reactivate crunch metrics.