Preheat oven to 450°F.

Whisk together Bisquick mix and baking powder in a medium-sized bowl. Once combined, add 4 Tablespoons of COLD, grated butter (use a cheese grater for this). Set remaining 2 Tablespoons butter aside for later. Use a pastry blender (or 2 forks) to cut 4 Tbsp. butter into the mixture until it's the size of peas. Stir milk in, only until fully combined. The dough will be thick and "shaggy" (slightly sticky).

Sprinkle work surface with flour. Turn the dough out onto the floured surface. Sprinkle dough with a little flour. Using your hands, gently knead/fold the dough into itself 4-5 times. Use your hands (or a rolling pin) to press the dough out until it's 1" thick all over.

BEFORE CUTTING THE BISCUITS OUT- Add reserved 2 Tbsp. of cold grated butter to a cast iron or other oven-safe skillet. Place skillet in preheated 450℉. oven which will melt the butter (while you cut out the biscuits).

Use a biscuit cutter or a glass to cut the biscuit dough into circles. The size and quantity of the biscuits is determined by the size glass/biscuit cutter you use. You can gather up any scraps of dough left over and "smoosh" them together in order to cut out an additional biscuit.

Carefully remove HOT skillet from the oven. Swirl skillet around, so the bottom is coated with melted butter. Place biscuits in the skillet, leaving ½" between each one. Put skillet back in oven. Bake at 450°F. for 13-16 minutes. When done, biscuits should be cooked through AND golden brown on top! Separate biscuits; serve immediately with favorite toppings. Enjoy!