This Oven Baked 4-Ingredient Chicken Tetrazzini is a creamy, comforting casserole made with spaghetti, cooked chicken, condensed cream of mushroom soup, and Parmesan. It bakes until hot, bubbly, and lightly golden for an easy cozy dinner.
Prep Time 15 minutes mins
Cook Time 35 minutes mins
Total Time 50 minutes mins
Cover leftovers and refrigerate for up to 3 days. Reheat individual servings in the microwave until hot, adding a tiny splash of milk or chicken broth if the pasta seems dry. Reheat larger portions in a covered baking dish at 350°F until warmed through, uncovering for the last few minutes if you want the top to perk back up. Freezing after baking is not recommended because the spaghetti can become too soft.
Keyword 4-ingredient dinner, chicken casserole, chicken tetrazzini, cream of mushroom soup, easy baked pasta, Oven Baked 4-Ingredient Chicken Tetrazzini, spaghetti casserole