Preheat the oven to 350.
Prepare a 9x13 baking dish with baking spray or coat with butter.
Cut the baked potatoes up into bite sized pieces and place in the prepared baking dish.
Sprinkle salt and pepper over the potatoes
Dot the butter around the top of the casserole.
Sprinkle half of the grated cheddar cheese over the potatoes
Spread the broccoli florets evenly around the dish.
Sprinkle the bacon bits over the top of the broccoli
In a medium bowl mix the sour cream, soup and milk together and then spread this mixture over the top of the already assembled casserole.
Sprinkle with the remainder of the cheddar cheese
Sprinkle with parmesan cheese.
Top with remaining bacon pieces.
Bake uncovered in preheated oven until bubbly and the corners are golden and crunchy