Momma's Crunchy-Bottomed Biscuits

Step 1 -Preheat the oven to 475 degrees F.

Step 2 -Grate the frozen butter using the large holes of a box grater.

Step 3 -Toss the grated butter and 2 1/2 cups of the flour together in a medium bowl.

Step 4 -Chill the butter-flour mixture for 10 minutes.

Step 5 -Make a well in the center of the butter-flour mixture.

Step 6 -Add the buttermilk to the well and stir the mixture 15 times; the dough will be sticky.

Step 7 -Lightly dust a work surface with the flour. Turn the dough out onto the floured surface and then lightly sprinkle some of the flour over the top of the dough.

Step 8 -Lightly dust a rolling pin with the flour and roll the dough into a 3/4-inch-thick rectangle (about 9x5-inches in size).

Step 9 -Fold the dough in half so the short ends meet.

Step 10 -Repeat the rolling and folding process four more times. Try to keep the dough as cold as possible throughout the entire process.

Step 11 -Roll the dough to 1/2-inch thickness.

Step 12 -Lightly dust a 2 1/2-inch round biscuit cutter with the flour. Cut the dough with the floured cutter, reshaping the scraps and flouring as needed.

Step 13 -Warm a cast-iron skillet in the oven.

Step 14 -Spread a pat of the softened butter in the skillet before adding the biscuits.

Step 15 -Place the dough rounds in the skillet.

Step 16 -Bake until the biscuits are lightly browned, about 15 minutes.

Step 17 -Brush the tops of the biscuits with the melted butter.

Step 18 -Serve.