Blueberry Pop Tart Recipe

Ingredients

• 2 ½ cups all-purpose flour
• 1 tablespoon granulated sugar
• 1 teaspoon salt
• 1 cup cold unsalted butter, cubed
• ½ cup ice-cold water
• 1 large egg
• 2 cups fresh or frozen blueberries
• ⅔ cup granulated sugar
• 2 tablespoons cornstarch
• 1 tablespoon lemon juice
• ½ teaspoon vanilla extract
• ¼ teaspoon ground cinnamon
• 1 cup powdered sugar
• 1 to 2 tablespoons milk
• Blue or purple food coloring