Step 1

Preheat oven to 350°F. Lightly spray a 9x13 inch baking dish with cooking spray.

Step 2

Cook noodles according to directions on package. When finished cooking, drain.

Step 3

In a very large bowl, mix together cooked pasta, cream of chicken soup, tuna, water chestnuts, peas (no need to thaw them first), and 1 cup of the cheese. Mix until everything is combined.

Step 4

Spread casserole mixture into prepared pan. Sprinkle with remaining cheddar cheese or top with optional topping (see notes).

Step 5

Bake for 35 minutes or until golden brown and heated through. If noodles are getting too crispy for your liking, cover with foil.