Combine 1 1/2 cups flour, 2 teaspoons sugar, and 1 teaspoon salt in a medium bowl. Add butter pieces and toss to coat in flour. Using a pastry cutter, cut butter into flour until the pieces are the size of small peas.
Sprinkle 4 tablespoons of ice water over flour mixture then use your hands to moisten the flour. Let the flour fall through your fingers, but avoid overly squeezing or pressing too hard. Gently squeeze a handful of dough, if it crumbles apart and does not hold together add a couple more tablespoons ice water and gently toss to moisten.
Squeeze again, if dough easily holds together, gather all in a ball and wrap in plastic wrap. Press down to create a flat disk and refrigerate at least 1 hour.
Heat oven to 425°F and arrange a rack in the bottom of the oven. Roll out dough on a lightly floured surface to about 1/8-inch thick. Line a 9-inch pie plate with the dough and trim off excess, leaving a 1-inch border. Decoratively pinch edges together and prick the bottom all over with a fork.
Line crust with parchment paper and fill with pie weights or dried beans. Set on a baking sheet lined with parchment paper and bake for 15-20 minutes or until golden on the edges.
Remove parchment paper and beans and brush with beaten egg. Continue baking until bottom is lightly golden, about 5-10 more minutes. Transfer to a cooling rack to cool and turn oven down to 350°F.