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.
Skinny Chicken Tetrazzini Casserole

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
WW SmartPoints 8-Green
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

Skinny Chicken Tetrazzini Casserole

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Prep Time 20 minutes
Cook Time 1 hour
Total Time 1 hour 20 minutes
Course Main Course
Cuisine American, Italian
Servings 6
Calories 335 kcal


  • 6 ounces whole-grain spaghetti (4 cups cooked)
  • 2 tablespoons light butter
  • 2 cups onions, chopped
  • 2 cups mushrooms, sliced
  • 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
  • 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


  • Preheat oven to 350 degrees. Lightly spray a 9×9-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!


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!


  1. 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!!

  2. 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,

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