Preheat the oven to 425℉/218℃ convection roast and line a large baking tray with parchment paper.
Peel or scrub your potatoes and slice them into fries using a French fry cutter or a sharp knife. Toss them with broth or oil and salt. Then arrange them in a single layer on your tray. Roast for 20 minutes, then flip them, and continue roasting another 10-15 minutes, or until desired crispiness is reached.
Meanwhile, make the cheese sauce and prepare the remaining toppings while the fries are cooking.
Assembly: Use a large platter or the same tray you used to bake. Start with the fries, followed by approx. half of the cheese sauce, and then sprinkle all the remaining toppings in any order you'd like. Finally, finish it off by drizzling the remaining cheese sauce on top and serve.
Notes
Arrange the fries in a single layer with some space in between for the crispiest baked french fries and to prevent sticking.For a non-convection oven, expect a little longer cooking time. Keep baking until the desired crispiness is reached.