Description
Creamy, savory, and comforting—Chicken Tetrazzini Pasta Bake is a baked casserole packed with shredded chicken, tender pasta, and mushrooms, coated in a rich homemade sauce of milk, cheese, and broth. This dish is perfect for family dinners, freezer meals, or sharing with guests. With a golden cheesy topping and hearty texture, it’s a classic that never goes out of style.
Ingredients
12 oz spaghetti or linguine, broken in half
2 tablespoons olive oil or butter
2 cups cooked chicken, shredded or diced
1 small onion, finely chopped
8 oz mushrooms, sliced
2 cloves garlic, minced
1/4 cup all-purpose flour
2 cups chicken broth
1 cup milk
1/2 cup sour cream
1/2 cup grated Parmesan cheese
1 cup shredded mozzarella cheese, divided
1/4 cup dry white wine (optional)
1 teaspoon salt
1/2 teaspoon black pepper
1/2 teaspoon dried thyme or Italian seasoning
Fresh parsley, chopped (for garnish)
Instructions
1. Bring a large pot of salted water to a boil. Add spaghetti and cook until just al dente. Drain and set aside.
2. In a large skillet, heat olive oil or butter over medium heat. Add chopped onion and mushrooms; sauté for 6–8 minutes until browned. Add garlic and cook for 1 more minute.
3. Sprinkle flour over vegetables and stir for 1 minute. Gradually whisk in chicken broth, wine (if using), and milk. Cook and stir until sauce thickens, about 5 minutes.
4. Turn heat to low. Stir in sour cream, Parmesan, 1/2 cup mozzarella, salt, pepper, and thyme. Mix until smooth.
5. In a large bowl, combine cooked pasta, chicken, and creamy sauce. Toss gently to combine.
6. Pour into a greased 9×13-inch baking dish. Top with remaining mozzarella. Cover loosely with foil and bake at 350°F (175°C) for 20 minutes.
7. Remove foil and bake an additional 10 minutes until golden and bubbly.
8. Let rest 5–10 minutes before serving. Garnish with parsley.
Notes
Undercook your pasta slightly—it continues to soften while baking.
Don’t skip sautéing mushrooms until browned—it’s essential for building deep flavor.
Allow the bake to rest after cooking so the sauce thickens and portions hold together when serving.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Category: Casserole
- Method: Baked
- Cuisine: American
Nutrition
- Serving Size: 1/8 of casserole
- Calories: 510
- Sugar: 4g
- Sodium: 620mg
- Fat: 26g
- Saturated Fat: 12g
- Unsaturated Fat: 11g
- Trans Fat: 0g
- Carbohydrates: 40g
- Fiber: 2g
- Protein: 29g
- Cholesterol: 90mg
Keywords: chicken tetrazzini, pasta bake, creamy chicken casserole