Cut the butter into cubes and place in the freezer for 5-10 minutes. While the butter is chilling, pulse the flour, sugar, and salt in the food processor to combine.
Add the cold butter cubes and pulse about 10 times to break up the butter just a bit. Stream in the water and blend into the flour mixture until a dough just barely starts to come together - it will still be crumbly.
Dump the dough onto a cutting board sprinkled with a bit of flour. Split the dough into 2 mounds and form each into a flat disk about 1-inch thick. Wrap the disks in plastic wrap or a plastic bag. Refrigerate for 1 hour or until ready to use.