Preheat oven to 425° Fahrenheit. Line large baking sheet with parchment paper. Set baking sheet aside.
Wash 2 pounds Russet potatoes under running water, scrubbing potatoes well to remove all surface dirt. Once washed, peel potatoes if desired.
Cut potatoes in half horizontally, then cut each half in half vertically, creating 4 quarters from each potato. Slice each potato quarter into long, thin matchsticks, each approximately ¼-inch-thick.
Transfer potato sticks to large bowl. Drizzle 3 tablespoons olive oil over potatoes, then add 1 teaspoon salt and ½ teaspoon garlic powder. Toss or stir potatoes until fully coated in oil, salt, and garlic powder.
Transfer seasoned potatoes to prepared baking sheet and spread potato sticks out into single, even layer, leaving approximately ½ inch between each potato stick.
Place baking sheet in preheated oven. Bake potato sticks 15 minutes.
After 15 minutes, carefully from baking sheet from oven. Use tongs to flip each potato stick over, then return baking sheet to oven. Bake 10 to 15 minutes more or until fries are as crispy as desired.
When satisfied with crispiness of fries, remove baking sheet from oven and immediately drizzle 1 tablespoon truffle oil over fries. Sprinkle ¼ cup grated fresh parmesan cheese flaky salt, and chopped fresh parsley over fries.
Transfer fries to serving bowl or plate and serve warm with desired dipping sauces.