Use a pastry cutter or fork to cut butter into the flour mixture until the mixture is coarse.
Pour in the buttermilk and use your hands to mix just until combined.
Turn the dough onto a lightly floured surface and kneed just until it comes together. Press into a rectangle. Fold one side in and then the other. Press and gently flatten. Then repeat one more time. Roll until the dough is about 1/2 - 3/4 inch thick.
Use a 3 inch biscuit cutter to cut the biscuits. Re-roll until you get 8 biscuits. Brush with melted butter if desired.
Place the biscuits in a 10 inch cast iron skillet. Cook in preheated oven for 15 minutes or until browned on top.
Nutrition information is for estimation purposes only.