Place the butter into the freezer for 15 minutes or so.
In a separate bowl, mix together flour, baking powder, salt, cinnamon, and brown sugar.
Place butter (chopped if using a food processor) and dry ingredients into a food processor and pulse until the butter is in small, pea-sized chunks.
*If you don’t have a food processor, you can use a fork or pastry blender to mix the ingredients in a large bowl. Grate the frozen butter with a cheese grater to make it much easier and fluffier. Mix until pea-sized chunks of butter form.
Add in the sourdough starter and vanilla extract. Mix.
If the dough is dry, add 1-2 tbs of cold milk or water. Start with 1 tablespoon and determine if it needs more.
Pulse or mix until it starts to form a ball.
Place on parchment paper and shape into a disk about 1 inch thick. Now you decide if you want to long ferment it or bake it right away.
(Optional) – Long Ferment:
Place the dough in a covered dish or wrap in plastic wrap and put into the fridge for 2-3 days or at room temperature for 8-12 hours.
Once it is done fermenting proceed to the next step.
Bake
Preheat the oven to 425.
Dice the apples.
Add the chopped apples or other mix-in if desired. Knead together. Be careful not to over-knead.
Roll out the dough with a rolling pin a lightly floured surface into an even circle about 1 inch thick.
Cut scones into 8 even triangles or whatever shape you would like and place on the unbaked scones onto prepared cookie sheets.
Create an egg wash by cracking an egg into a dish and whisking it thoroughly. (Optional)
Brush egg onto the top of the scones and sprinkle brown sugar on top.
Bake for 15-20 minutes until the edges start to turn golden brown.
Allow to cool on a cooling rack.
Create the Cinnamon Apple Glaze:
Is a small bowl, add apple juice (cider, water, or milk also work), cinnamon, and powdered sugar.
Whisk together until the glaze forms. If it is too thick add a little more liquid, or if it is too thin add more powdered sugar. If your powdered sugar is really clumpy I would suggest sifting it first.
Drizzle the apple cinnamon glaze over the scones. Enjoy.
Notes
A food processor makes these 100 times easier, and the texture is better. But you can definitely make this without it as well.
You can bake these right away or allow them to long ferment in the refrigerator for three days. See below for my recommendations.
For best results, freeze the butter for a little bit before you make this recipe.
Bake time will depend on the thickness of your scones.