01 -
In a large bowl, mix flour, salt, and sugar. Cut in butter using a pastry cutter or fingers until the mixture resembles coarse crumbs. Gradually add ice water, mixing just until dough comes together. Divide dough in half, shape into discs, wrap, and chill for 30 minutes.
02 -
In a bowl, combine blueberries, sugar, cornstarch, lemon juice, zest, cinnamon, and salt. Toss gently to coat.
03 -
Preheat oven to 400°F (200°C).
04 -
Roll out one dough disc and fit into a 9-inch pie dish. Fill with the blueberry mixture. Roll out the second disc and cut out star shapes using cookie cutters. Arrange stars over the filling in a decorative pattern.
05 -
Brush crust and stars with beaten egg and sprinkle with coarse sugar if desired.
06 -
Bake for 45–50 minutes, until crust is golden and filling is bubbly. Cover edges with foil if they brown too quickly.
07 -
Cool at room temperature for at least 2 hours before serving to allow filling to set.