Skinny Chicken Tetrazzini Casserole
Easy and temptingly delicious, this cheesy Chicken Tetrazzini, is a real comfort food classic! I’ve already shared one made in a skillet. This skinny version is made into a casserole. Each serving has 335 calories and 12 grams of fat.
Why You'll Love This Skinny Chicken Tetrazzini Casserole
- Easy to make: A quick microwave shortcut for the veggies keeps prep super simple before baking.
- Loaded with flavor: Tender chicken, earthy mushrooms, and sweet onions folded into whole-grain spaghetti with a creamy, garlic-herb sauce.
- A complete dinner: Delivers all the rich, cheesy comfort of classic tetrazzini with a lightened-up twist—just pair with a side salad!
- Great for leftovers: Bakes up into neat slices that reheat beautifully and freeze wonderfully for future meals.
Ingredients For Skinny Chicken Tetrazzini Casserole
This lightened-up pasta bake combines cooked whole-grain spaghetti and chopped chicken breast with sautéed mushrooms and onions. It's tossed in a velvety sauce made from healthy cream of chicken soup, protein-rich Greek yogurt, part-skim ricotta, and chicken broth, then finished with a bubbly layer of melted mozzarella and Parmesan cheese!
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See the recipe card below for the complete ingredient list and exact amounts.
How to Make Skinny Chicken Tetrazzini Casserole
Making this comforting pasta casserole is so straightforward! Cook the spaghetti al dente, then soften the butter, onions, and mushrooms together in the microwave. Stir the cooked chicken, soup, ricotta, broth, Greek yogurt, and seasonings right into the bowl with the vegetables, fold in the cooked pasta, and transfer everything to a baking dish. Top with mozzarella and Parmesan, then bake. Let cool for a few minutes, slice, and enjoy!
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See the recipe card below for complete step-by-step instructions, baking temperature, and cooking time.
Helpful Tips About this Recipe
Makes 6 servings. Each serving, 1 slice.
Food Facts
Tetrazzini is an American dish often made with diced chicken, turkey, tuna, or seafood with vegetables such as mushrooms and onions and cooked in a butter/cream sauce. Usually served over pasta There are numerous variations of this dish. You might like to try my other Chicken Tetrazzini recipe made in a skillet.
Shopping Tips
Trader Joe’s sells packages of cooked, sliced, or chopped chicken breasts that are really tasty.  If you buy a cooked chicken from the supermarket, be sure to remove the skin before chopping and adding to this dish.
WW Freestyle SmartPoints 7-Blue
WW SmartPoints 8-Green
WW POINTS PLUS 9 Â
Food Facts
Tetrazzini is an American dish often made with diced chicken, turkey, tuna, or seafood with vegetables such as mushrooms and onions and cooked in a butter/cream sauce. Usually served over pasta There are numerous variations of this dish. You might like to try my other Chicken Tetrazzini recipe made in a skillet.
Shopping Tips
Trader Joe’s sells packages of cooked, sliced, or chopped chicken breasts that are really tasty.  If you buy a cooked chicken from the supermarket, be sure to remove the skin before chopping and adding to this dish.
WW Freestyle SmartPoints 7-Blue
WW SmartPoints 8-Green
WW POINTS PLUS 9 Â
| SKINNY FACTS: for 1 serving 335 calories, 12g fat, 3g sat. fat, 61mg chol, 25g prot, 37g carbs, 4g fiber, 700mg sod, 6g sugar |
| FACTS: for Freestyle SmartPoints 260 calories, 2g sat. fat, 14g protein, 3g sugar |
Skinny Chicken Tetrazzini Casserole
Ingredients
- 6 ounces whole-grain spaghetti (4 cups cooked)
- 2 tablespoons light butter
- 2 cups onions, chopped
- 2 cups mushrooms, sliced
- 1½ cups cooked chicken, chopped, see shopping tips
- 1 (10.75 oz.) can Campbell’s Healthy Request cream of chicken soup
- 1 cup part-skim ricotta cheese or reduced-fat cottage cheese
- ½ cup reduced-sodium chicken broth
- â…“ cup non-fat Greek yogurt
- ¼ teaspoon salt, black pepper, and garlic powder or to taste
Topping Ingredients
- ¾ cup light shredded mozzarella cheese
- ¼ cup grated Parmesan cheese
Instructions
- Preheat oven to 350 degrees. Lightly spray a 9x9-inch baking dish with cooking spray.
- Cook pasta al dente according to package directions. Drain. Set aside.
- In the meantime,  In a large microwave-safe bowl, add butter, onions, and mushrooms and cook in a microwave for 4-5 minutes, until soft.
- To the same large bowl of cooked onions/mushrooms, add chicken, condensed can of soup, ricotta cheese, chicken broth, and yogurt.  Add salt, pepper, and garlic powder, to taste. Using a rubber spatula, mix well until all incorporated. Stir in cooked pasta. Mix completely until well tossed.
- Pour mixture into prepared baking dish. Top with both kinds of cheese. Cover with aluminum foil. Bake covered for 30 minutes. Remove foil and bake an additional 30 minutes, until cheeses are melted.
- Remove from oven and cool for a few minutes. Cut into 6 slices. Any leftovers freeze great!
Nutrition
Serving: 1sliceCalories: 335kcalCarbohydrates: 37gProtein: 25gFat: 12gSaturated Fat: 3gCholesterol: 61mgSodium: 700mgFiber: 4gSugar: 6gBlue Smart Points: 7Green Smart Points: 8Plus Points: 9
Tried this recipe?Let me know how it was!
I’m thrilled to hear you and your family loved this recipe. Christine, any time you want to tell them you created it is fine by me. Such a cute story!
Wishing you all the best,
Nancy
This Skinny Chicken Tetrazzini Casserole was amazing. Everyone in my family commented on how good it was. (Sorry, I let them think I came up with it on my own. 😉 They knew the truth though.) I’ve been recreating your recipes for quite a long time now and I want to say THANK YOU!!