2Lightly grease a 12” cast iron skillet or large round baking pan with butter.
3In a large bowl, whisk together the cake flour, all-purpose flour, sugar, baking powder, baking soda, and salt.
4Add in the cubed butter, and use a pastry cutter or two knives to cut the butter into the flour mixture, until it is crumbly and the butter resembles pea-sized chunks.
5Make a well in the center of the mixture, and pour in the buttermilk and sourdough discard.
6Mix with a wooden spoon until barely combined (it will still be crumbly).
7Then, use your hands to knead and fold the dough over itself a couple of times until combined.
8Add the blueberries, and gently fold a few more times until the blueberries are evenly dispersed.
9Use a very large cookie scoop or a ½ cup measuring cup to scoop the dough for each biscuit, and place in the prepared skillet or pan.
10Mix together the brown sugar and cinnamon in a small bowl for the cinnamon sugar topping.
11Brush the tops of the biscuits with buttermilk or heavy cream.
12Then, sprinkle the tops with the cinnamon sugar mixture.
13Bake for 20-25 minutes, or until fluffy and golden brown.
14While baking, prepare the whipped salted vanilla bean butter. In a medium bowl, whip the butter and vanilla bean paste together with a whisk or handheld electric mixer until combined and fluffy.
15Remove the biscuits from the oven and serve warm with the whipped salted vanilla bean butter, honey, and flaky sea salt if desired.
Ingredients
256 g cake flour
130 g all-purpose flour
30 g granulated sugar
12 g baking powder
3 g baking soda
3 g salt
171 g salted butter, cold and cubed
255 ml buttermilk
140 g sourdough discard
130 g fresh or frozen blueberries
45 ml buttermilk or heavy cream, for brushing
120 g brown sugar
3 g cinnamon
113 g salted butter, at room temperature
1.5 tsp vanilla bean paste
honey or raw honeycomb, for serving
flaky sea salt, for serving
Equipment
12” cast iron skilletlarge round baking panlarge bowlwhiskpastry cuttertwo kniveswooden spoonvery large cookie scoop½ cup measuring cupsmall bowlhandheld electric mixer