The recipe for 7-Up biscuits calls for 2 cups of Jiffy or Bisquick baking mix, 1/2 cup of sour cream, 1/2 cup of 7-Up soda or other clear carbonated soda, and 1/4 cup of melted butter. Begin by preheating the oven to 450 degrees Fahrenheit.
Cut the sour cream and butter into the baking mix without using a mixer. Use a fork, knife or fingers to mix these ingredients together. Make sure that the dry mix coats the sour cream and butter mixture, and mix in the 7-Up. The dough develops a very soft consistency. Sprinkle an additional 1/2 cup of the baking mix onto the counter or work surface. Knead and work the dough into the baking mix on the counter, covering the dough completely with the baking mix and mixing it thoroughly.
Pat the dough out onto the counter, and use a glass or cookie cutter to cut out biscuits. Melt butter in a 9-inch square pan. Place the biscuits into the pan on top of the melted butter, and bake in the oven for 12 to 15 minutes or until brown.
Alternatively, add cubed or melted butter to the top of biscuits while baking to add another buttery layer to the biscuits.