- For the scones, cut the butter into small cubes. Transfer to a small bowl and keep in the fridge. 
- In a large mixing bowl, combine flour, baking powder, cinnamon and salt. Add the butter cubes and combine with a pastry cutter, a fork or your fingers until there are no pieces of butter larger than a pea. Keep in the fridge to chill. 
- Line a large dinner plate with a piece of wax paper. Set aside. 
- In a medium bowl, whisk together heavy cream, egg, light brown sugar and vanilla extract. Pour the wet ingredients into the flour mixture. Using a spatula, stir until the flour is moistened. Add apple and mix well. The dough will be sticky and wet. 
- On a clean work surface, lightly dust with flour. Scoop the dough onto the work surface. Cover your hands with flour. Lightly knead dough until it just comes together (just a few seconds). Shape the dough into a 1-inch thick round disk, about 7-inch in diameter. With a sharp knife, divide the dough into 8 wedges. Transfer to the prepared dinner plate and freeze for 30 minutes. 
- Preheat oven to 400˚F (200˚C). Line a baking sheet with parchment paper. 
- Quickly brush the top of the scones with heavy cream, sprinkle generously with raw sugar. Set onto the prepared baking sheet, leaving 2 – 3 inches space between scones. 
- Bake in the oven for 23 – 25 minutes or until golden brown around the edges and lightly browned on top. Remove from oven and cool on the baking sheet for a few minutes. 
- Meanwhile, prepare the glaze if using. In a small microwave-safe bowl, add butter and milk. Microwave for 30 seconds. Add brown sugar, salt and vanilla extract. Whisk to melt the sugar. Add powdered sugar and whisk until smooth. 
- When ready to serve, drizzle the glaze over the scones. Serve warm.