Chicken Tetrazzini

What Is Chicken Tetrazzini?

Chicken tetrazzini is a type of baked casserole consisting of diced chicken (although you could also use turkey or seafood), mushrooms, pasta, and a rich and creamy sauce. In this version of chicken tetrazzini, I’ve used gluten-free noodles and made the butter-based sauce gluten-free by using cornstarch to thicken it rather than flour.

Heat Oven & Prepare

Preheat the oven to 350℉. Spray a baking dish with nonstick cooking spray. Cook spaghetti per package.

Cook Mushrooms & Onion

Stir the mushrooms and cook until golden, about 10 minutes. Add butter and onion. Stir well and cook.

Add Seasonings

Add the garlic, onion powder, salt and pepper, and cornstarch. Cook while stirring constantly for about 2 minutes.

Whisk & Cook

Add the chicken broth and milk and whisk until the starch is dissolved. Bring to a simmer. Cook for 5 minutes.

Add Other Ingredients

Add sour cream. Add the peas, chicken, cooked spaghetti, and ½ cup of mozzarella cheese to a large bowl.

Assemble Casserole

Pour the mixture over the noodles. Stir together to combine. Add to baking dish and cover with mozzarella.

Top and Bake

Top with breadcrumn topping and bake for 25 minutes until golden and bubbly.

Serve and Enjoy

Remove from the oven and sprinkle with parsley. Allow the dish to sit for 5 minutes before serving.

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