Billion Dollar Buttery Biscuits

Ingredients:

1/2 cup (1 stick) salted butter
4 ½ cups Bisquick or similar baking mix
1 cup 7-Up or similar lemon-lime soda
1 cup sour cream (avoid using light sour cream)
Directions:

Preheat the Oven:
Preheat your oven to 425℉. Place the butter in a 9×13-inch baking dish and put the dish in the oven until the butter is melted