-
Preheat oven to 350 degrees F. Coat a 9×13 baking dish with nonstick cooking spray, set aside.
-
In large bowl whisk together both soups, sour cream, butter, chicken broth, salt, pepper, and garlic powder until combined.
-
Stir in the peas, chicken, and spaghetti; toss to combine until fully coated.
-
Pour mixture into the prepared baking dish and sprinkle with the cheeses.
-
Cover with foil and bake for 30 minutes, then remove foil and continue baking for another 15 minutes until cheese is melted and casserole is hot throughout.
-
Remove from oven and sprinkle with parsley. Let stand 5-10 minutes.
-
Serve and enjoy!