Set your oven rack to the upper-middle position and heat the oven to 425 degrees. Line a rimmed baking sheet with parchment paper or a silicone baking mat.
2 cups (10 ounces) all-purpose flour, 2 tablespoons granulated sugar, 1 tablespoon baking powder, ½ teaspoon table salt
In a large bowl, whisk together the flour, sugar, baking powder, and salt.
5 tablespoons unsalted butter, cut into 5 pieces and chilled
Sprinkle the chilled butter pieces over the flour mixture. Use a pastry blender to blend the butter into the flour until it looks like fine crumbs, with pieces of butter no bigger than a pea.
1 cup heavy cream
Add the 1 cup cream and use a rubber spatula to stir until just combined and no dry flour is visible (the dough will look crumbly).
Sprinkle some extra flour onto a clean countertop. Transfer the dough to the floured counter. Use your hands to gather up the dough pieces into a ball, then gently knead and press the dough until it sticks together in a smooth-ish mass. Press and pat the dough into about a 7-inch circle, about ¾-inch thick.
Use a 2-inch round cookie cutter to cut out 6 to 8 rounds of dough. (You can dip the cutter in some extra flour if it sticks to the dough.) Transfer the dough rounds to the parchment-lined baking sheet.
Gather up the dough scraps into a ball, gently knead them together, then press out the dough into another ¾-inch-thick circle. Use the cookie cutter to cut out more rounds of dough. Repeat as needed until you have 10 to 12 dough rounds total.
1 tablespoon heavy cream
Use a pastry brush to paint the top of each scone with the remaining 1 tablespoon of cream.
Place the baking sheet in the preheated oven. Bake until the scones are puffy and golden brown, 12 to 14 minutes.
Use oven mitts to remove the baking sheet from the oven and place it on the stovetop or a cooling rack. Let the scones cool on the baking sheet for at least 10 minutes.