Peach Cobbler with Blueberries and Bourbon

Ingredients

• 2 pounds fresh peaches cut into thick wedges
• 1 oz pack blueberries 6
• 1/4 cup brown sugar
• 1/4 cup regular sugar
• 1 1/2 tablespoons cornstarch
• 4 tablespoons bourbon
• 2 teaspoons vanilla extract
• 1 1/2 cups all purpose flour
• 2 tablespoons sugar plus extra for sprinkling
• 2 1/2 teaspoons baking powder
• 6 tablespoons cold unsalted butter chopped into small pieces
• 1/2 cup whole milk or heavy cream plus extra for glazing the biscuits