8 large boiling potatoes (3 1/2 pounds), peeled and quartered lengthwise
1 stick (1/2 cup) unsalted butter, melted
Directions
Preheat oven to 350°F.Sprinkle cheese on wax paper or foil and dry 1 hour. Transfer to a large sealable bag with flour, salt, and pepper, then shake to mix.
Rinse potatoes and drain in a colander. Add potatoes to flour mixture, tightly sealing bag, and shake to coat well.
Pour butter into a large shallow baking pan. Lift potatoes from bag and arrange in 1 layer in butter.
Roast in middle or lower third of oven, turning twice, until browned and crisp, about 1 1/4 hours.
