Blueberry Buttermilk Biscuits

1: Preheat oven to 500°F.

2: Combine all dry ingredients plus the lemon zest in the bowl of a food processor.

3: Add the diced butter and pulse until it is pea-sized.

4: Add buttermilk and pulse until the dough separates from the sides of the bowl.

5: Spill dough onto a well-floured surface and add the blueberries.

6: Knead gently to incorporate the berries into the dough, folding the dough over itself a couple of times.

7: Press the dough out and flatten to about 1/2 inch thickness.

8: Using a biscuit cutter, cut out biscuits.

9: Place biscuits in a cast-iron skillet and ensure they are touching.

10: Brush the biscuits with half of the melted butter.

11: Bake at 500°F for about 10 minutes.

12: Remove the skillet from the oven and brush the biscuits again with the remaining melted butter.

13: Return the biscuits to the oven for another 10 minutes or until golden.

14: Remove from oven and let sit for about 10 minutes.

15: Drizzle with glaze made from powdered sugar, milk, and vanilla mixed until smooth.