Buttery Blueberry Scones

Heat the oven to 400 F/200 C/Gas 6. Line a baking sheet with parchment paper or a silicone baking mat. In a bowl, combine the flour, sugar, baking powder, and salt. Whisk to blend thoroughly. Cut the butter into small pieces and add to the flour mixture. Work in with a pastry blender and fingers until well incorporated and the mixture is crumbly. In a small bowl, whisk the 2/3 cup of cream with the egg and vanilla. Stir the cream mixture into the dry ingredients just until ingredients are moistened. Turn the dough out onto a floured surface and gently knead frozen blueberries in, a few at a time, folding over and adding a few more. Work the dough as little as possible. Divide the dough into 2 portions and pat into circles about 1/2- to 3/4-inch thick. Cut each circle into 8 wedges. Arrange on the parchment paper. Brush each scone lightly with cream and sprinkle with sugar, if desired. Bake for 11 to 14 minutes, or until lightly browned. Serve the scones warm with lemon curd, butter, a cream cheese spread, blueberry jam, or your favorite fruit preserves.