01 -
In a large bowl, combine flour, granulated sugar, and salt. Add butter cubes and mix until the mixture resembles coarse crumbs. Slowly add cold water, mixing until a dough forms. Do not overmix.
02 -
Wrap the dough in plastic wrap and refrigerate for at least 1 hour.
03 -
Preheat oven to 375°F (190°C) and line a baking sheet with parchment paper.
04 -
Roll out the dough on a floured surface into a rectangle. Spread chocolate chips evenly over the dough, then sprinkle with brown sugar.
05 -
Roll the dough tightly into a log and slice into 2-inch pieces. Place the pieces cut-side down on the prepared baking sheet.
06 -
Brush each piece with beaten egg and bake for 25-30 minutes until golden brown.
07 -
Cool on a wire rack before serving.