Preheat your oven to 450°F (232°C).
In a mixing bowl, combine the Bisquick mix and sugar. Stir until well blended.
Gradually pour in the buttermilk while stirring to create a slightly sticky dough.
Flour a clean surface lightly, turn the dough out, and knead it a couple of times. Pat it down to about 1 inch thick.
Using a biscuit cutter or floured glass, cut out your biscuits and place them on the baking sheet.
Brush the tops of the biscuits with melted butter.
Bake for 8-10 minutes, or until golden brown.
Let cool slightly, then serve warm with your favorite toppings.
