Step 1: Preheat your oven to 450°F (232°C).
Step 2: Line a baking sheet with parchment paper.
Step 3: Grate the frozen butter into the mixing bowl with self-rising flour.
Step 4: Toss the grated butter with the flour until it resembles coarse crumbs.
Step 5: Pour in the cold buttermilk and gently stir until just combined.
Step 6: Turn the dough onto a floured surface and dust with flour.
Step 7: Pat the dough to 1-inch thickness and fold over a few times.
Step 8: Cut out biscuits using a biscuit cutter.
Step 9: Place cut biscuits on the baking sheet, touching for soft sides.
Step 10: Brush the tops with melted butter before baking.
Step 11: Bake for 12-15 minutes until golden brown.
