Preheat oven to 375°F (190°C) and grease a 9x13 inch baking dish.
In a large mixing bowl, whisk together the softened cream cheese, heavy cream, chicken broth, garlic powder, onion powder, salt, and pepper until smooth.
Stir in the shredded chicken, steamed broccoli, and 1 cup of the shredded cheddar cheese.
Transfer the mixture to the prepared baking dish and spread evenly.
Top with the remaining 1 cup of shredded cheddar cheese.
Bake for 20 to 25 minutes until the cheese is melted and bubbling.
Let stand for 5 minutes before serving.