Mixed Berry Mini Galettes

Ingredients (9)

• 1 3/4 cups all-purpose flour
• 1/3 cup granulated sugar
• 1/4 cup coarse cornmeal
• 1/4 teaspoon salt
• 1/2 cup cold butter
• 1/3 cup buttermilk
• 2 cups mixed berries
• 1 egg
• 2 tablespoons turbinado sugar