Preheat oven to 450 degrees F (232 degrees C).
Mix Bisquick or homemade alternative, 1 tablespoon melted butter, buttermilk, sugar, and salt in a medium mixing bowl.
Knead the dough for 30 seconds on a lightly floured countertop. Roll the dough into a small rectangle about ¾-inch thick.
Use a biscuit cutter to shape 6 biscuits. Arrange them on an ungreased baking sheet and place in the oven to make for 10-15 minutes, until tops are golden.
Transfer to a wire cooling rack and brush with the remaining butter. Serve warm.
