Pour the Bisquick into a large bowl. Add in sour cream. Mix together. Pour in 7-Up, and stir until combined. The dough will be very soft.
Sprinkle another 1/2 cup of Bisquick onto a clean counter-top and gently pat dough out to desired thickness (about 1 inch)
Use a circle biscuit cutter and cut out biscuits. (You should get 9 total) Pour melted butter into a 9x9 pan. Place the biscuits into the pan, on top of the butter. Bake in a 450 degree oven, for 8-10 minutes or until golden brown. EnJOY!