Pulse flour, sugar, and salt in a food processor to combine. Add butter; process until mixture resembles coarse meal, about 10 seconds. Add yolks; pulse. With machine running, add ice water in a slow, steady stream through feed tube until dough just holds together (no longer than 20 seconds). Divide in half; shape each into a rectangle. Wrap in plastic. Refrigerate at least 2 hours (up to 2 days).
Freeze up to 1 month.