Instructions
Preheat oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish.
Cook spaghetti according to package directions. Drain and set aside.
Sauté mushrooms: In a large skillet, melt butter over medium heat. Add mushrooms and cook until softened (5 minutes).
Make the sauce: Sprinkle in flour, stirring for 1 minute. Gradually whisk in chicken broth and heavy cream until smooth and thickened.
Season & cheese: Stir in Parmesan, garlic powder, onion powder, salt, and pepper until the cheese melts and the sauce is creamy.
Combine: Add cooked spaghetti and shredded chicken, tossing until evenly coated. Transfer to the baking dish.
Add topping: Mix breadcrumbs with olive oil and sprinkle over the pasta.
Bake for 25-30 minutes until golden and bubbly.
Rest 5 minutes before serving for the perfect consistency.
Enjoy your delicious, creamy Chicken Tetrazzini—a crowd-pleasing meal that’s as easy as it is satisfying!
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