Begin by preheating your oven to 425°F (220°C). Line a baking sheet with parchment paper to prevent sticking and ensure easy cleanup.
In a large mixing bowl, combine the all-purpose flour, granulated sugar, baking powder, and salt. Whisk together until the ingredients are well blended and there are no lumps.
Take the chilled, cubed butter and add it to the flour mixture. Using a pastry cutter or your fingers, mix the butter into the dry ingredients until the mixture resembles coarse crumbs, with pea-sized pieces of butter remaining.
Create a well in the center of the crumb mixture. Pour in the buttermilk and add the vanilla extract. Gently stir with a spoon or spatula just until the dough begins to come together; do not overmix.
Carefully fold in the fresh blueberries, making sure to avoid smashing them to keep the berries intact.
Lightly flour a clean surface and turn the dough out onto it. Knead gently, just enough to help the dough come together into a cohesive mass. Be cautious not to overwork the dough to maintain tenderness.
Shape the dough into a rectangle about 1-inch thick. Use a round cutter or a glass to cut out biscuits. Gather the scraps, re-pat, and continue cutting until all the dough is used.
Place the biscuits on your prepared baking sheet. Use a brush to apply a thin layer of heavy cream on the tops of each biscuit, which will promote a lovely golden brown finish.
Bake in your preheated oven for 12-15 minutes, or until the biscuits are lightly golden and cooked through. Keep an eye on the edges for a perfect bake!
Once baked, remove the biscuits from the oven and let them cool on the baking sheet for a few minutes before transferring them to a wire rack to cool slightly. Serve warm for the best melt-in-your-mouth experience!
Notes
Serve warm for the best melt-in-your-mouth experience. Add honey or whipped cream for extra indulgence.