Preheat oven to 400°F (200°C)

Mix flour, sugar, and baking powder in a large bowl

Add cold butter and use a pastry blender or fingers to work it into the dry ingredients until the mixture resembles coarse crumbs

Stir in heavy cream until the dough starts to come together

Gently fold in lemon zest and blueberries

Turn the dough out onto a floured surface and gently knead it a few times until it comes together

Pat the dough into a circle that is about 1 inch (2.5 cm) thick

Cut the dough into wedges or use a biscuit cutter to create scones

Place the scones on a baking sheet lined with parchment paper

Bake for 18-20 minutes, or until the scones are golden brown

Remove the scones from the oven and let them cool on a wire rack for 10-15 minutes

Serve warm and enjoy