If you’re looking for a comforting and delicious dish that brings the family together, look no further than Chicken Tetrazzini Casserole. This classic dish combines tender chicken, pasta, creamy sauce, and a medley of vegetables to create a satisfying meal that’s perfect for weeknights or special gatherings. Whether you’re a busy parent or simply someone who loves a hearty casserole, this recipe has everything you need to please a crowd.
The Upside of Chicken Tetrazzini Casserole

Chicken Tetrazzini Casserole is not only delicious but also incredibly versatile. The creamy, cheesy goodness can be tailored to your taste preferences, and it’s an excellent way to use up leftover chicken. Plus, it’s a one-dish meal, which means less cleanup—an absolute win in my book! The combination of textures—from the tender pasta to the crunchy bits of turkey bacon—will make every bite an experience. You can also make it ahead of time and pop it in the oven when you’re ready to eat, making it a perfect option for meal prep.
Ingredient List

- 2 cups cooked chicken, shredded
- 8 oz spaghetti, cooked
- 1 cup cooked mushrooms, sliced
- 1 cup green peas, frozen
- 1 cup cream of chicken soup
- 1 cup chicken broth
- 1 cup grated parmesan cheese
- 1 cup shredded mozzarella cheese
- 1/2 cup milk
- 1/4 cup turkey bacon, cooked and crumbled
- 1/2 teaspoon garlic powder
- 1/2 teaspoon onion powder
- Salt and pepper to taste
- 1/2 teaspoon dried thyme
- 1/2 teaspoon dried parsley
Gear Checklist

- Large pot for boiling spaghetti
- Skillet for sautéing mushrooms (optional)
- Mixing bowl for combining ingredients
- Baking dish (9×13 inches recommended)
- Measuring cups and spoons
- Wooden spoon or spatula for mixing
Method: Chicken Tetrazzini Casserole
Step 1: Preheat Your Oven
Preheat your oven to 350°F (175°C). This ensures that your casserole cooks evenly and gets that perfect golden crust on top.
Step 2: Cook Your Pasta
In a large pot, bring salted water to a boil. Add the spaghetti and cook according to the package instructions until al dente. Drain and set aside.
Step 3: Sauté the Mushrooms
If you choose to use fresh mushrooms, heat a skillet over medium heat and add a splash of oil. Sauté the sliced mushrooms until browned and tender, about 5 minutes. Remove from heat and set aside.
Step 4: Combine the Ingredients
In a large mixing bowl, combine the cooked chicken, sautéed mushrooms, cooked spaghetti, frozen green peas, cream of chicken soup, chicken broth, milk, and spices (garlic powder, onion powder, thyme, and parsley). Mix until well combined.
Step 5: Add the Cheeses
Fold in the grated parmesan and half of the shredded mozzarella cheese into the mixture, ensuring even distribution. Season with salt and pepper to taste.
Step 6: Prepare for Baking
Transfer the mixture into a greased 9×13 inch baking dish. Spread it evenly and top with the remaining mozzarella cheese and crumbled turkey bacon.
Step 7: Bake
Place the casserole in the preheated oven and bake for 30-35 minutes, or until the cheese is melted and bubbly, and the edges are lightly golden.
Step 8: Serve and Enjoy
Remove from the oven and let it cool for a few minutes before serving. Enjoy your Chicken Tetrazzini Casserole with a fresh salad or some crusty bread!
Vegan & Vegetarian Swaps
- Replace the chicken with 2 cups of cooked chickpeas or tofu for a vegetarian option.
- Use vegan cream of chicken soup or a homemade cashew cream for a vegan alternative.
- Switch out the turkey bacon with a plant-based bacon alternative or simply omit it.
- Use nutritional yeast in place of parmesan cheese for a cheesy flavor without dairy.
Watch Outs & How to Fix
Sometimes, casseroles can turn out too dry or too wet. Here are some tips to ensure your Chicken Tetrazzini Casserole is just right:
- If the casserole is too dry, consider adding more chicken broth or a splash of milk before baking.
- If it’s too wet, try baking it a bit longer uncovered to allow excess moisture to evaporate.
- Check the seasoning! Always taste your mixture before baking to adjust salt and pepper levels.
- Keep an eye on the cheese; if it’s browning too quickly, cover the casserole with foil for the latter half of baking.
Prep Ahead & Store
This Chicken Tetrazzini Casserole is perfect for meal prep. You can prepare it a day in advance and store it in the fridge before baking. Here are some storage tips:
- Assemble the casserole, cover it tightly with plastic wrap or aluminum foil, and refrigerate for up to 24 hours.
- If you wish to freeze it, prepare the casserole but do not bake. Wrap it well and freeze for up to 2 months.
- To bake from frozen, thaw in the refrigerator overnight and bake as directed.
- Leftover casserole can be stored in an airtight container in the fridge for up to 3 days.
Your Questions, Answered
Can I use other types of pasta?
Absolutely! While spaghetti is traditional, you can use any pasta shape you prefer, such as penne, rotini, or even gluten-free options.
What can I substitute for cream of chicken soup?
You can use homemade cream of chicken soup or a can of cream of mushroom soup for a different flavor. Alternatively, a mixture of heavy cream and broth can work too.
How do I make it spicier?
If you love a kick, consider adding some crushed red pepper flakes or cayenne pepper to the mix. Just a pinch can elevate the flavor profile!
What can I serve with Chicken Tetrazzini Casserole?
A simple side salad with a tangy vinaigrette or steamed vegetables pairs beautifully with this casserole, balancing out the richness.
Try These Next
- Classic Beef Lasagna
- Creamy Spinach and Artichoke Pasta
- One-Pot Cheesy Broccoli Rice Casserole
- Baked Ziti with Sausage
Ready to Cook?
Gather your ingredients and get ready to delight your family with this Chicken Tetrazzini Casserole! The comforting flavors and creamy texture will surely become a favorite in your home. Whether you make it for a special occasion or a cozy weeknight dinner, this dish is sure to impress. Enjoy every bite!
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Chicken Tetrazzini Casserole
Ingredients
For the Casserole:
- 2 cups cooked chicken shredded
- 8 oz spaghetti cooked
- 1 cup cooked mushrooms sliced
- 1 cup green peas frozen
- 1 cup cream of chicken soup
- 1 cup chicken broth
- 1 cup grated parmesan cheese
- 1 cup shredded mozzarella cheese
- 1/2 cup milk
- 1/4 cup turkey bacon cooked and crumbled
- 1/2 teaspoon garlic powder
- 1/2 teaspoon onion powder
- Salt and pepper to taste
- 1/2 teaspoon dried thyme
- 1/2 teaspoon dried parsley
Instructions
Method:
- Preheat your oven to 350°F (175°C). This ensures that your casserole cooks evenly and gets that perfect golden crust on top.
- In a large pot, bring salted water to a boil. Add the spaghetti and cook according to the package instructions until al dente. Drain and set aside.
- If you choose to use fresh mushrooms, heat a skillet over medium heat and add a splash of oil. Sauté the sliced mushrooms until browned and tender, about 5 minutes. Remove from heat and set aside.
- In a large mixing bowl, combine the cooked chicken, sautéed mushrooms, cooked spaghetti, frozen green peas, cream of chicken soup, chicken broth, milk, and spices (garlic powder, onion powder, thyme, and parsley). Mix until well combined.
- Fold in the grated parmesan and half of the shredded mozzarella cheese into the mixture, ensuring even distribution. Season with salt and pepper to taste.
- Transfer the mixture into a greased 9x13 inch baking dish. Spread it evenly and top with the remaining mozzarella cheese and crumbled turkey bacon.
- Place the casserole in the preheated oven and bake for 30-35 minutes, or until the cheese is melted and bubbly, and the edges are lightly golden.
- Remove from the oven and let it cool for a few minutes before serving. Enjoy your Chicken Tetrazzini Casserole with a fresh salad or some crusty bread!
Equipment
- Large pot for boiling spaghetti
- Skillet for sautéing mushrooms (optional)
- Mixing bowl for combining ingredients
- Baking dish (9x13 inches recommended)
- Measuring cups and spoons
- Wooden spoon or spatula for mixing
Notes
- This casserole can be made ahead of time and refrigerated before baking.
- Leftovers can be stored in an airtight container in the fridge for up to 3 days.
- To freeze, prepare without baking and wrap tightly; it can be frozen for up to 2 months.
