2 c. Bisquick, plus more for kneading
1/2 c. sour cream
1/2 c. club soda (or 7-up for some sweetness)
4 Tbl. (1/2 stick) unsalted butter, melted
Preheat the oven to 450 degrees. Add biscuit mix to a large bowl and cut the sour cream into it, using a pastry cutter or a fork. Stir in the club soda; the dough will be soft. Turn the dough out onto a floured counter and knead 3 or 4 times, adding additional biscuit mix, if needed.
Press or pat the dough into a 1/2-inch thick rectangle. Cut 9 biscuits. Pour the butter into a 9-inch square baking pan. Arrange the biscuits in the pan on top of the melted butter. Bake until golden brown, 12-15 minutes. Serve warm.
Jenn's Notes: I used 7-up, because I wanted a sweeter biscuit.