Ingredients

1 cup all-purpose flour, plus more for work surface 

1/2 teaspoon table salt 

1 teaspoon sugar 

1 tablespoon unsalted butter, cut into pieces 

1/3 cup plus 1 tablespoon whole milk 

Kosher salt for sprinkling 

Preparation

Preheat oven to 325 degrees. Pulse flour, table salt, and sugar in a food processor to combine. Add butter, and pulse until mixture resembles coarse meal. With machine running, gradually add milk; process until dough comes together.

Transfer dough to lightly floured surface. Roll into 10-by-12-inch sheet, 1/16 inch thick . Sprinkle with kosher salt; gently roll to press salt into dough.

Cut dough into 2 1/2-inch squares; carefully transfer to a baking sheet. Liberally pierce with a fork. Bake until just brown and firm to touch, 20 to 25 minutes. Transfer to a wire rack to cool. Store in an airtight container.