
Hearty Chicken Spaghetti Casserole
Ingredients
- 8 ounces uncooked spaghetti
broken into 3-inch pieces
- 3 cups cubed cooked chicken
- 1 can condensed cream of chicken soup
undiluted, 10-3/4 ounces
- 1 cup 2% milk
- 1 medium onion
chopped
- 1 cup shredded sharp cheddar cheese
divided
- 1 cup shredded Swiss cheese
divided
- 1 can mushroom stems and pieces
drained, 4 ounces
- 1/2 cup chopped roasted sweet red peppers
- 3 tablespoons mayonnaise
- 1-1/2 teaspoons steak seasoning
- 1/2 teaspoon dried basil
Directions
- 1
Cook spaghetti according to package directions. Meanwhile, in a large bowl, combine the chicken, soup, milk, onion, 1/2 cup cheddar cheese, 1/2 cup Swiss cheese, mushrooms, peppers, mayonnaise, steak seasoning and basil.
- 2
Drain spaghetti. Add to chicken mixture; toss to coat. Transfer to a greased 13x9-in. baking dish. Cover and bake at 350° for 20 minutes. Uncover; sprinkle with remaining cheeses. Bake until heated through and cheese is melted, 5-10 minutes longer.

Hearty Chicken Spaghetti Casserole
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About this Recipe
Craving a comforting meal that feels like a warm hug? This Hearty Chicken Spaghetti Casserole delivers on all fronts, promising creamy, cheesy goodness perfect for any family dinner. It's the kind of homey dish that beckons for second helpings, a true testament to its satisfying flavor.
What sets this casserole apart is the harmonious blend of sharp cheddar and Swiss cheeses, creating a rich, savory depth that blankets tender spaghetti. Combined with succulent chicken and a velvety sauce, it's a guaranteed crowd-pleaser that's surprisingly simple to bring together, making it a go-to for busy weeknights.
Imagine digging into layers of perfectly cooked spaghetti, nestled in a creamy, luscious sauce made with condensed cream of chicken soup and milk. Each forkful offers tender cubes of chicken, the bright, slightly sweet zest of roasted sweet red peppers, and the earthy notes of mushrooms, all enveloped in that irresistible melted cheddar and Swiss. The addition of mayonnaise adds a subtle tang and extra richness, while steak seasoning and dried basil infuse the dish with an aromatic, savory complexity that elevates classic comfort food to something truly special.
Customization & Variations
While this casserole is a star as is, you can easily adapt it to your pantry or preferences. If you prefer a different protein, cooked turkey or even shredded pork would be delicious substitutes for the chicken. For an extra boost of vegetables, consider stirring in some thawed frozen peas or corn alongside the mushrooms and peppers. You could also experiment with different cheese blends, like Monterey Jack or colby, if sharp cheddar and Swiss aren't your preference for a milder profile.
This substantial casserole is ideal for a comforting weeknight dinner or a casual gathering. Serve it alongside a crisp green salad and some crusty bread to soak up every last bit of the creamy sauce.


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