2 cups all purpose flour 3/4 cup granulated
sugar 1/4 teaspoon ground nutmeg 1/4 teaspoon ground cinnamon 1 1/2 teaspoons baking powder 1/4 teaspoon baking soda 1/2 teaspoon Kosher or sea salt 12 ounces fresh or frozen (not thawed) blueberries 1 cup buttermilk 1 large egg
+ 1 large egg yolk, room temperature 1 teaspoon pure vanilla extract 2 tablespoons neutral - flavored oil (I used canola) 2 tablespoons unsalted butter, melted 2 tablespoon coarse
sugar (like
turbinado), for sprinkling