• Preheat the oven according to the package directions. Spread the frozen coated fries into a single layer on a large baking sheet. Bake until deeply golden and crispy, following the package instructions.
• While the fries bake, heat the oil in a small skillet over medium heat. Add the white onion and cook, stirring occasionally, until softened and lightly caramelized, about 10–12 minutes. Set aside.
• In a medium bowl, stir together: Thousand Island Dressing, Finely Diced Pickles, Pickle Brine, Garlic Powder, and Black Pepper. The chopped pickles add texture while the pickle brine brightens the dressing without making it heavy.
• When the fries are crispy, sprinkle the Shredded Cheddar evenly over the top. Return the pan to the oven for 2–3 minutes, or until the cheese is melted.
• Transfer the cheesy fries to a large serving bowl. Drizzle with about half of the sauce and gently toss until the fries are lightly coated. Tossing instead of pouring all the sauce on top helps distribute flavor while keeping the fries crisp.

To finish, top with:

• Caramelized White Onion
• Diced Dill Pickles
• Chopped Pepperoncini or Pickled Chilies (Optional)
• Remaining Sauce, lightly drizzled over the top
• Fresh Chives or Parsley, if using