Easy Chicken Tetrazzini

If you love old-fashioned comfort food that comes together with just a handful of ingredients, this easy 4-ingredient chicken tetrazzini deserves a spot in your dinner rotation. Inspired by a vintage recipe from the early 1960s, this creamy chicken pasta casserole combines tender spaghetti, shredded chicken, creamy mushroom soup, and Parmesan cheese in one simple baking dish.

This easy chicken tetrazzini is especially handy for busy weeknights or relaxed Sunday dinners. It requires minimal prep, uses convenient pantry staples, and comes out of the oven hot, creamy, and lightly golden on top.

Why You’ll Love This Easy Chicken Tetrazzini

• Only 4 main ingredients: A short grocery list makes this recipe budget-friendly and convenient.
• Easy weeknight dinner: Most of the preparation involves simply cooking the spaghetti and mixing the ingredients.
• Creamy and comforting: Cream of mushroom soup creates a rich, savory sauce without requiring a separate homemade cream sauce.
• Great for leftovers: The casserole reheats well, making it useful for lunches or another easy dinner.
• Family-friendly: Tender chicken, pasta, creamy sauce, and Parmesan create familiar flavors that work well for a family meal.
• Make-ahead friendly: Assemble the casserole ahead of time and refrigerate it until you’re ready to bake.

Ingredients

• 12 ounces spaghetti, cooked and drained
• 2 cups cooked shredded chicken
• 2 cans condensed cream of mushroom soup
• 1 cup grated Parmesan cheese, divided

How to Make Chicken Tetrazzini

1. Preheat the oven: Heat your oven to 350°F. Lightly grease a 9×13-inch baking dish.
2. Cook the spaghetti: Prepare the spaghetti according to the package directions until just tender. Drain thoroughly.
3. Combine the ingredients: Add the cooked spaghetti, shredded chicken, cream of mushroom soup, and about ¾ cup of the Parmesan cheese to a large bowl. Stir until everything is evenly coated in the creamy sauce.
4. Fill the baking dish: Transfer the mixture to the prepared baking dish and spread it into an even layer.
5. Add the Parmesan topping: Sprinkle the remaining Parmesan cheese evenly over the top.
6. Bake: Place the casserole in the oven and bake for 30–35 minutes, or until hot and bubbling around the edges with a lightly golden top.
7. Rest before serving: Let the chicken tetrazzini stand for 5–10 minutes before serving. This allows the casserole to set slightly and makes it easier to scoop.

Helpful Tips

Add milk or chicken broth if needed: If the mixture looks unusually thick, stir in a small splash of milk or chicken broth before transferring it to the baking dish.

Use rotisserie chicken: For an even faster chicken tetrazzini recipe, use shredded rotisserie chicken. It’s a convenient way to add tender, flavorful chicken without extra cooking.

Add mushrooms: For a more homemade mushroom flavor, sauté sliced mushrooms in a little butter and stir them into the casserole before baking.

Create a crispy topping: Combine the remaining Parmesan with a small handful of breadcrumbs before sprinkling it over the casserole for extra crunch and a golden crust.

Don’t overcook the pasta: Cook the spaghetti just until tender because it will continue cooking in the oven.

Make it ahead: Assemble the casserole, cover it, and refrigerate it for up to a day before baking. If baking directly from the refrigerator, allow approximately 10–15 additional minutes for the casserole to heat through.

What to Serve With Chicken Tetrazzini

Because this casserole is creamy and hearty, simple vegetable sides work especially well. Try serving it with:

• Crisp green salad
• Steamed green beans
• Roasted broccoli
• Roasted vegetables
• Warm dinner rolls
• Garlic bread