White Truffle Gnocchi Gratinate – q.b. Cucina

Ingredients

• 2 pounds russet potatoes
• 2 cups 00 flour, plus more as needed
• 1 egg, whisked
• Pinch of salt
• 7¼ tablespoons all-purpose flour
• 4 tablespoons butter
• 4 cups whole milk
• 1 cup parmesan cheese, finely grated, plus more for topping
• 2 cloves garlic, skin removed
• Salt and pepper to taste
• White truffle oil