large egg - 1 (beaten with a pinch of salt until smooth)
butter - 4 tablespoons (melted, divided)
hot paprika - optional, for seasoning
garlic powder - optional (optional, for seasoning)
onion powder - optional (optional, for seasoning)
Instructions
Preheat Oven and Prepare Potatoes: Preheat oven to 400F / 375F convection. Julienne the potatoes into strands the size of ramen. Plunge immediately into a bowl of water until ready to cook.
Dry and Season Potatoes: Drain and thoroughly dry the potatoes on clean kitchen towels. In a large bowl, combine potatoes, 2 tablespoons butter, potato flour, beaten egg, hot paprika, garlic powder, onion powder, and salt. Toss to combine until the potatoes are evenly coated in a pasty pink mixture, adjust as necessary if too thin or thick.
Cook Potato Pancake: Heat remaining 2 tablespoons butter in a medium nonstick skillet until foaming. Press down potato mixture into a thin, uniform layer and cook over medium heat, swirling and rotating frequently for 5 minutes, until the edges turn deep golden brown. Flip using a plate, transfer pan to the oven, and bake for 10 minutes. Slide potato pancake out onto a wire rack set in a rimmed baking sheet, reduce oven temp to 325F, and bake for anywhere from 5-20 minutes, taking care not to burn, until ready to serve.