Blueberry Shortcake

Name: Blueberry Shortcake
Prep time: 30 min
Cook time: 25 min
Total time: 55 min
Cuisine: American
Ingredients: 2 cups all-purpose flour; 1 1/2 tablespoons granulated white sugar; 2 teaspoons baking powder; 1/4 teaspoon kosher salt; 1/3 cup cold unsalted butter, cut into small cubes; 1 large egg; 3/4 cup half and half plus 1 tablespoon more for brushing; Granulated sugar for sprinkling on top; 5 cups fresh blueberries 2 1/2 pints; 1/2 cup sugar; 1 teaspoon lemon zest; 1 tablespoon lemon juice; Whipped cream; Fresh blueberries; Vanilla ice cream