Step 1: Preheat your oven to 400°F (200°C).
Step 2: In a large mixing bowl, whisk together the all-purpose flour, sugar, baking powder, and kosher salt until well combined.
Step 3: Using a pastry cutter or fork, cut the cold butter into the dry mixture until it resembles coarse crumbs.
Step 4: Pour in the heavy cream and vanilla extract. If using an egg, add that as well. Gently mix until the dough just comes together.
Step 5: If adding fruits, nuts, or chocolate chips, fold them in gently.
Step 6: On a floured work surface, turn out the dough and knead it gently just a few times until it holds together. Pat it into a circle about 1-inch thick and cut into desired shapes.
Step 7: Place your scones on a baking sheet lined with parchment paper and sprinkle a little sugar on top.
Step 8: Bake for 15-20 minutes, or until golden brown. Transfer to a cooling rack to cool slightly.
Step 9: To make the glaze, whisk together the confectioners sugar, heavy cream, and vanilla bean paste until smooth. Drizzle over warm scones.