In a large bowl, combine flour, dark brown sugar, baking powder, cinnamon and salt, and whisk together. Light brown sugar can be used as a substitute for dark brown sugar.
280g (2 c) flour, 110g (1/2 c) brown sugar, 14g (1 T) baking powder, 3g (1 1/2 tsp) cinnamon, 3g (1/2 tsp) salt
Grate the cold/frozen butter and add to the flour mixture. Cut in with a pastry cutter or mix with your fingers until the small pieces of butter are coated with flour and create pea-sized coarse crumbs.
113g (1/2 c) cold/frozen unsalted butter
Chop the apples into ¼-inch cubes. I leave the peel on, but you can peel the apples, if you prefer. Stir the chopped apples into the dry mixture. Choose a juicy apple for these scones, such as Honeycrisp, Gala, or Pink Lady apples!
125g (heaping cup) apple (I love to use Honeycrisp apples!)
In a medium bowl, whisk together the sourdough discard, egg, heavy cream, and vanilla extract until smooth. Make sure the discard, egg and cream are all cold to help the butter from melting.
120g (1/2 c) sourdough discard, 1 egg, 30g (2 T) heavy cream, 8g (2 tsp) vanilla extract
Pour the wet ingredients into the dry ingredients. Mix the scone dough with a rubber spatula until the cream mixture is combined. The dough will be crumbly, but be careful not to over mix the dough.
Turn out the dough onto your work surface, and knead the dough for about 30 seconds, then form it into an 8″ disc. Cut the dough into 8 equal wedges with a bench scraper or a large knife.
Place the unbaked scones on a baking tray with parchment paper with space in between them. Chill in the fridge for at least 30 minutes while the oven preheats. I love using this cover on top of my baking sheets!
When ready to bake, brush the tops of the sourdough scones with more heavy cream and top with coarse sugar and a sprinkle more cinnamon, if desired.
Preheat the oven to 400 degrees F. Bake the scones for 21 - 23 minutes, or until the top of the scones are golden brown. Remove and serve warm!