Cook the ramen noodles according to package instructions, but discard the seasoning packets. Drain and set aside.
In a large mixing bowl, combine the cooked chicken, thawed vegetables, cream of mushroom soup, milk, garlic powder, onion powder, salt, and pepper. Mix well.
Add the cooked ramen noodles to the mixture and stir until everything is well combined.
Transfer the mixture to a greased baking dish and spread it out evenly.
Sprinkle the shredded cheese evenly over the top.
Bake in the preheated oven for 25-30 minutes, or until the casserole is bubbly and the cheese is melted and golden brown.
Let it cool for a few minutes before serving. Enjoy!
Notes:
This casserole is a great way to use up leftover chicken and veggies. Feel free to customize with your favorite ingredients.