In a medium size mixing bowl combine the flour, salt, baking powder and sugar.
2 cups all purpose flour, ¼ teaspoon fine grind sea salt or kosher salt, 4 teaspoons baking powder, 2 Tablespoons granulated sugar
Grate the cold butter into the bowl and using clean hands gently mix together until the butter combines with the dry mixture and becomes the texture of coarse sand.
4 Tablespoons salted butter
Make a well in the center and add in the lightly beaten egg. Using a fork, gently begin to mix the egg with the flour and butter mixture. Slowly add in the cream and contine to mix with a fork until it starts to form a crumbly dough.
1 large egg, ⅔ cup heavy cream
Turn the crumbly dough out onto a pastry mat or a clean, lightly floured work surface. There will be loose dough at this point. Gently fold the dough and press it together, gathering the loose dough at the same time. Repeat this a few times until the dough is holding together. It will still be a cracking a little.
Press the dough into a rectangle shape. Lightly flour the surface and using a rolling pin, roll the dough until it is about ½" thick. Fold the dough in half so it is 1" thick.
Using a 2-2½" biscuit cutter, press straight down into the dough to form the scones. Don't twist the biscuit cutter, press straight down and lift straight up. Repeat this until you run out of area on the dough. You should get 4-5 scones at this point.
Push together the leftover dough to form another 1" thick square and cut more scones. Continue to do this until all the dough is used up. With a 2½" biscuit cutter, you should get about 8 scones that are each 1" in height.
Preheat the air fryer on 400℉/200℃ for 10 minutes. Lightly brush the tops with cream, making sure not to spill it over the edges which can prevent them from rising as high. Place the scones on the cooking surface, which can be the air fry basket, air fry plate, or a pizza plate. Place the scones about 1" apart. Air fry the scones 400℉ for 8-10 minutes or until they are golden brown on top. I found that 8 minutes of cook time and then leaving the scones in the air fryer turned off for 2 minutes cooked them perfectly.
Depending on the size of your air fryer, you may need to cook in batches.
This recipe will make between 8-10 scones depending on the size of your scone or biscuit cutter and how thick the dough is.Air Fryers come in different sizes and cook differently. I have used several different air fryers when testing this recipe and the best temperature to cook them on is between 375℉-400℉/190℃-200℃I recommend checking on the scones after 6 minutes to see how they are browning. If they are getting too dark on top, lower the temperature for the remaining few minutes. If they aren't browning enough raise the temperature or cook them longer. After the scones cool, store them in an airtight container at room temperature. They will stay fresh 3-5 days.