Preheat oven to 450
Combine Bisquick and sour cream and lightly mix until the sour cream is distributed through out the mix, but does not form into a dough.
Add soda into the Bisquick mixture and stir lightly just until no dry spots remain.
Place butter in a heavy-bottomed, oven-safe skillet and place in oven until the butter is melted.
Remove hot skillet from oven and place mounds of dough on top of the melted butter.
Return to oven and bake for 12-15 minutes or until the tops are lightly golden.