Adding cornmeal makes these biscuits a cross between a traditional flaky biscuit and cornbread, meaning they pair perfectly with hearty meals like stews and chilis.
Heat your oven to 425°F, or 400°F if using a convection oven.
Combine all dry ingredients in a large bowl. Cut in butter using butter knives or a pastry cutter until you have chunks the size of peas.
Make a well in the center of a bowl and pour in buttermilk. Blend gently with spatula until combined.
Place dough onto a lightly floured board and pat into a rectangle about one inch thick. Fold into thirds and roll into 1” thick rectangle. Repeat this process one more time and roll to approximately ½ inch thick.
Trim edges and cut into 9 square pieces. Place on a parchment-lined baking sheet. Brush with additional buttermilk and bake for 10-12 minutes, or until the tops are golden brown.