Preheat the oven to 350°F (175°C) and generously grease a 9×13-inch baking dish.
In a large mixing bowl, combine the sour cream, cream of chicken soup, shredded chicken, ranch seasoning, 1 cup of the shredded cheddar cheese, and crumbled bacon. Stir until well blended.
Cut the refrigerated biscuits into quarters.
Gently fold the biscuit pieces into the chicken mixture, being careful not to overmix.
Spread the mixture evenly into the prepared baking dish.
Sprinkle the remaining 1 cup of cheddar cheese evenly over the top.
Bake uncovered for 25–35 minutes, or until the casserole is bubbly and the biscuits are cooked through and lightly golden on top.
Let the casserole rest for a few minutes before serving.
Enjoy!