Cook the egg noodles according to package instructions. Drain and set aside.
In a large mixing bowl, combine the shredded cheddar cheese, sour cream, cream of mushroom soup, milk, frozen peas, and diced cooked chicken. Mix well.
Add the cooked noodles to the mixture and stir until everything is well combined. Season with salt and pepper to taste.
Transfer the mixture to a baking dish and spread it out evenly.
Bake in the preheated oven for 25-30 minutes, or until the top is golden and bubbly.
Let it cool for a few minutes before serving. Enjoy!
Notes:
This casserole is perfect for a cozy family dinner. You can also add other veggies or use different types of cheese to suit your taste.