Preparing the Scones:

Preheat the Oven:

1. Preheat the oven to 400°F (200°C). Prepare a baking sheet by lining it with parchment paper or a silicone baking mat.

Combine Dry Ingredients:

1. In a medium-sized mixing bowl, sift together all-purpose flour, baking powder, salt, and granulated sugar. Whisk thoroughly to ensure even distribution.

Incorporate Butter:

1. Add the cold butter chunks to the flour mixture. Using a pastry blender or two forks, cut the butter into the flour until the mixture resembles coarse crumbs. This step is crucial for achieving a flaky texture.

Add Blueberries:

1. Gently fold in the fresh blueberries, taking care not to crush them. The aim is to distribute the berries evenly throughout the dough.

Mix in Heavy Cream:

1. Create a well in the center of the mixture and pour in the heavy cream. Fold the ingredients together until a dough forms. Avoid over-mixing, as this can result in dense scones.

Shape the Dough:

1. Transfer the dough onto a lightly floured surface. Press it into a rectangle approximately 12 inches by 3 inches and 1 1/4 inches thick.

Cut the Dough:

1. Divide the rectangle in half, then cut each half into two equal squares. Proceed to cut each square diagonally to form eight triangle-shaped scones.

Bake the Scones:

1. Place the scones on the prepared baking sheet, leaving space between them. Brush the tops lightly with heavy cream to promote a golden finish.
2. Bake in the preheated oven for 15 to 20 minutes or until the edges are lightly browned.
3. Allow the scones to cool for 5 to 10 minutes on the baking sheet before transferring them to a wire rack.

Preparing the Lemon Glaze:

Combine Ingredients:

1. In a small, heatproof bowl, whisk together lemon juice and confectioners’ sugar until the sugar dissolves completely.
2. Add unsalted butter and lemon zest.

Heat the Mixture:

1. You may use a double boiler or microwave. If using a microwave, heat for 30 seconds and stir until smooth. If using a double boiler, heat over simmering water, whisking constantly.

Apply the Glaze:

1. Drizzle the lemon glaze over the cooled scones using a spoon. Allow the glaze to set before serving.