In an oven-safe skillet, melt butter over medium heat. Reduce heat to medium-low and add Ranch seasoning, cream cheese, heavy cream, broth, crumbled bacon, and cheese. Whisk to combine and cook sauce for about 5 minutes. Meanwhile, steam the broccoli.
Stir the broccoli and shredded chicken into the sauce mixture. Sprinkle 1 1/2 cups shredded cheese and 1/2 cup crumbled bacon over top.
Cook in oven for about 20 minutes, until bubbly throughout and cheese is melted. Then move to top oven rack and broil for 2-3 minutes, if desired. Serve warm.
Air Fryer Instructions
Transfer the mixture to an air fryer safe dish. Cook in the air fryer for 10-15 minutes or until cheese melts and is bubbly. For a crispier top add 2-3 minutes.
Notes
If you don't have an oven-safe skillet, just transfer mixture from skillet to a baking dish for cooking in the oven.