1. Process flours, sugar, and salt in a food processor until combined, about 10 seconds. Scatter butter slices over flour mixture and pulse until broken into pea-sized pieces, 6 to 8 times. Transfer to a large bowl and break up any large chunks with your fingers, if necessary.
2. Sprinkle water over mixture and stir with a spatula until dough just comes together and no dry flour remains. Turn out onto counter and gently knead and shape into a 6"-wide disk. Wrap in plastic and refrigerate for at least 1 hour and up to 2 days.
Source: Hannaford fresh Magazine, July - August 2016