Lemon Blueberry Scones

Ingredients

• 1/2 cup heavy whipping cream – very cold
• 2 tablespoons powdered sugar – use a bit more if you like it sweeter
• 3/4 cup sour cream mascarpone cheese
• 2 cups all purpose flour
• 1/4 cup granulated sugar
• 2 teaspoons baking powder
• 1/2 teaspoon table salt
• 6 tablespoons unsalted butter cold, cut into small cubes
• 1 cup blueberries
• 3 tablespoons lemon zest
• 3/4 cup heavy cream cold
• 1 egg large
• 2 teaspoons vanilla extract
• 1 tablespoon heavy cream cold
• 2 tablespoons sanding sugar optional