Preheat your oven to 450°F (230°C).

Line a baking sheet with parchment paper or lightly grease it.

In a mixing bowl, combine the Bisquick baking mix and optional baking powder.

Pour in the milk and melted butter, then stir with a fork until just combined.

Turn the dough onto a floured surface and gently knead it just a few times.

Pat the dough to about 1-inch thickness, then use a biscuit cutter to cut out rounds.

Place the biscuit rounds on the prepared baking sheet.

Bake in the preheated oven for 10 to 15 minutes, or until golden brown.