Preheat your oven to 375°F (190°C). Grease your casserole dish lightly to prevent sticking.
Melt butter in a large skillet, then stir in shredded chicken, mixed vegetables, cream of chicken soup, heavy cream, and chicken broth.
Add garlic powder, onion powder, thyme, salt, and pepper. Stir until the sauce thickens slightly and becomes creamy.
Transfer the mixture to your casserole dish, spreading it evenly for consistent baking.
Cut the biscuits into halves or quarters, placing them on top of the creamy mixture. This ensures an even bake.
Sprinkle cheddar cheese on top if you prefer a cheesy finish.
Bake for 25–30 minutes or until biscuits are golden brown and the filling is bubbling around the edges.
Allow the casserole to rest for at least 5 minutes before serving so the filling can set.
