Begin by washing and scrubbing the russet potatoes under cold water. Pat them dry with a kitchen towel. Cut each potato into 1/4-inch thick sticks, trying to keep them as uniform as possible for even cooking.
Preheat your oven to 425°F (220°C). A hot oven is essential for achieving that crispy texture.
In a large mixing bowl, combine the cut potato sticks with 2 tablespoons of olive oil. Toss well to ensure all the fries are evenly coated.
Spread the seasoned fries in a single layer on a baking sheet lined with parchment paper. Make sure they are not overcrowded, as this will prevent them from getting crispy. Bake in the preheated oven for about 25-30 minutes, flipping halfway through.
Once the fries are golden brown and crispy, remove them from the oven. Drizzle 1/4 cup of truffle oil over the fries while they are still hot, tossing gently to coat.
Sprinkle 1/2 cup of grated Parmesan cheese over the fries, followed by a tablespoon of chopped fresh parsley. Season with sea salt and freshly cracked pepper to taste.
Transfer your truffle fries to a serving platter and enjoy them while they are hot and crispy. Serve with your favorite dipping sauces for an extra treat!