Toss them in truffle oil and freshly grated parmesan cheese as soon as they come out of the oven. Toss the fries in a little bit oil and seasoning to begin. 2. Toss the potatoes, olive oil, salt, and garlic powder together in a big mixing basin. Then bake them until they’re very crispy, then top them with a drizzle of truffle oil, parmesan cheese, and flaky ...