Preparation Steps

• In a large bowl, combine flour, granulated sugar, and salt. Cut in the cold butter until the mixture resembles coarse crumbs.
• Gradually add ice water, mixing until dough begins to come together. Divide dough into two discs, wrap in plastic, and chill for at least 1 hour.
• Preheat oven to 375°F (190°C). In a separate bowl, mix blueberries, brown sugar, lemon juice, and cornstarch until well combined.
• On a lightly floured surface, roll out chilled dough to about 1/8 inch thickness. Cut dough into 4-inch circles.
• Spoon blueberry mixture onto center of each circle, leaving a 1-inch border. Fold edges up, pleating dough to form rustic galettes.
• Brush dough edges with beaten egg wash. Place galettes on a parchment-lined baking sheet.
• Bake galettes for 20-25 minutes until crust is golden and filling is bubbly. Cool slightly before serving.