If you grew up on comforting, cheesy casseroles, Pioneer Woman Chicken Spaghetti is the kind of dish that hits the same cozy note—with a Tex‑friendly twist of diced tomatoes with green chiles and two kinds of cheese. It’s an easy weeknight baker that uses pantry staples and shredded chicken (rotisserie works great). If you enjoy simple crowd-pleasers with minimal fuss, this will be a winner—and it sits nicely alongside other easy chicken casseroles like the air fryer Bang Bang chicken recipe for variety on a busy weeknight.
Why you’ll love this dish
This casserole is creamy, cheesy, and slightly tangy from the tomatoes with green chiles—comfort food that stretches a little further than a roast chicken and is friendlier on a budget than takeout. It’s one-dish, feed-a-crowd convenience without being heavy-handed. Perfect for:
- Weeknight dinners when you want something fast and filling.
- Potlucks and family gatherings because it reheats well.
- Using leftover chicken or a rotisserie bird.
“Endlessly comforting and forgiving—every time I make this, someone asks for the recipe.” — a satisfied home cook
The recipe is also flexible: swap cheeses, add more spice, or turn it into a freezer-friendly make‑ahead meal.
Step-by-step overview
Before you start, here’s the flow in plain terms:
- Boil spaghetti until al dente and drain.
- Sauté onions and bell peppers to soften.
- In a large bowl, combine pasta, shredded cooked chicken, soup, broth, tomatoes with chiles, sautéed vegetables, and seasonings.
- Transfer to a greased baking dish, top with cheddar and mozzarella, then bake at 350°F until bubbly and golden.
This gives you a clear roadmap so you’re not surprised halfway through—the whole bake takes about 25 minutes after assembly.
What you’ll need
- 8 oz. spaghetti (about half a standard 1‑lb box)
- 2 cups cooked chicken, shredded (rotisserie chicken is perfect)
- 2 cups chicken broth
- 1 can (10.5 oz.) cream of mushroom soup
- 1 cup diced tomatoes with green chilies (drained slightly if very liquidy)
- 1/2 cup chopped onion
- 1/2 cup bell pepper, chopped (any color)
- 1/2 cup grated cheddar cheese
- 1/2 cup grated mozzarella cheese
- 1/4 teaspoon garlic powder
- Salt and freshly ground black pepper, to taste
- 2 tablespoons olive oil
Ingredient notes:
- For lower sodium, use low-sodium broth and a low-salt canned soup.
- Swap cream of mushroom for cream of chicken if you prefer a different flavor.
- Use a mix of sharp and mild cheddar for deeper flavor.
How to prepare it
- Preheat the oven to 350°F (175°C). Grease a 9×13-inch baking dish with a little oil or nonstick spray.
- Bring a large pot of salted water to a boil. Add the spaghetti and cook according to package directions until al dente. Drain and set aside.
- Meanwhile, heat the olive oil in a skillet over medium heat. Add the chopped onion and bell pepper. Sauté until softened and translucent, about 4–6 minutes. Season lightly with a pinch of salt to help them sweat.
- In a large mixing bowl, combine the cooked spaghetti, shredded chicken, chicken broth, cream of mushroom soup, diced tomatoes with green chilies, sautéed onion and bell pepper, garlic powder, and a few grinds of black pepper. Taste and add salt as needed. Mix until everything is evenly coated.
- Transfer the mixture into the prepared 9×13-inch baking dish and spread it out evenly. Sprinkle the grated cheddar and mozzarella over the top.
- Bake in the preheated oven for about 25 minutes, or until the cheese is bubbly and lightly golden. If you like a browner top, switch to broil for 1–2 minutes—watch closely to avoid burning.
- Remove from the oven and let rest for 5 minutes before serving so the casserole sets slightly.
Directions to follow
- Cook pasta al dente to avoid a mushy casserole.
- Don’t over-salt early—canned soup and cheese add sodium.
- Use warm chicken or room‑temp ingredients to help bake evenly.
Best ways to enjoy it
Serve this chicken spaghetti with a crisp green salad, buttery garlic bread, or roasted vegetables for contrast in texture and brightness. For a Tex‑style spread, add pickled jalapeños and a side of cornbread. If you want an accompaniment that’s similarly quick and family-friendly, try pairing this with an easy fried or baked chicken appetizer like the air fryer ranch-crusted chicken bites for a playful starter while people dig into the casserole.
Presentation tips:
- Spoon into shallow bowls for a rustic look.
- Top with a scatter of fresh parsley or chopped green onions for color.
Storage and reheating tips
- Refrigeration: Store leftovers in an airtight container within 2 hours of cooking. Keeps well for 3–4 days.
- Freezing: Cool completely, then freeze in a freezer-safe container for up to 2–3 months. For best texture, freeze in individual portions if you’ll reheat single servings.
- Reheating (from fridge): Microwave on medium power, stirring halfway, until heated through, or bake in a 350°F oven covered with foil for 15–20 minutes.
- Reheating (from frozen): Thaw overnight in the fridge, then bake at 350°F covered for 20–30 minutes, removing the foil for the last 5–10 minutes to brown the top. If baking from fully frozen, add about 20–30 minutes and keep it covered until nearly hot.
Food safety: Always reheat to at least 165°F (74°C) internally. Discard any casserole left out longer than 2 hours.
Pro chef tips
- Use rotisserie chicken to save time and add flavor; shredding with two forks is fast and gives good texture.
- Cook pasta slightly less than package direction—it will finish cooking in the oven with the sauce.
- If your casserole looks dry, stir in an extra 1/4 to 1/2 cup chicken broth before baking.
- For even melt and color, grate your own cheeses instead of using pre-shredded (it melts smoother because it lacks anti-caking agents).
- Add a teaspoon of smoked paprika or chili powder for a smoky depth.
- To prevent a watery casserole, drain diced tomatoes lightly and avoid overusing broth.
Creative twists
- Spicy version: Use diced tomatoes with green chiles with more heat, or add a diced jalapeño sautéed with the onions.
- Creamy swap: Replace cream of mushroom with cream of chicken or a mixture of Greek yogurt and a little milk for tang.
- Vegetarian twist: Omit the chicken and add cooked mushrooms, roasted zucchini, or canned white beans for protein.
- Mexican flair: Stir in a cup of frozen corn and top with pepper jack cheese; garnish with cilantro and a squeeze of lime.
- Gluten-free: Use gluten-free spaghetti and ensure canned soup is GF or substitute with a homemade roux + milk for the sauce.
FAQ
Q: Can I use other pasta shapes instead of spaghetti?
A: Yes—rigatoni, penne, or elbows work well. Just adjust cooking time so the pasta is al dente before assembling.
Q: Can I make this ahead of time and bake later?
A: Absolutely. Assemble the casserole, cover tightly, and refrigerate for up to 24 hours. Add 5–10 minutes to the bake time if baking straight from the fridge.
Q: Is this freezer-friendly?
A: Yes. Freeze cooled, assembled casserole (covered) for up to 2–3 months. Thaw overnight before reheating for best texture.
Q: How do I prevent the pasta from getting soggy?
A: Cook pasta al dente, drain well, and avoid excess liquid in the diced tomatoes. If using very wet toppings, reduce the broth by 1/4 cup.
Q: Can I make this dairy-free?
A: For dairy-free, use dairy-free cheese alternatives and swap cream of mushroom soup with a dairy-free roux made from oil, gluten-free flour, and unsweetened dairy-free milk.
If you want recipe card formatting or a printable version tailored for a slow cooker or larger crowd, tell me your preferred serving size and I’ll scale and format it for you.
Chicken Spaghetti
Ingredients
Main Ingredients
- 8 oz spaghetti About half of a standard 1-lb box
- 2 cups cooked chicken, shredded Rotisserie chicken works great
- 2 cups chicken broth Use low-sodium for a healthier option
- 1 can cream of mushroom soup (10.5 oz) Can be substituted with cream of chicken
- 1 cup diced tomatoes with green chiles Drain slightly if very liquidy
- 1/2 cup chopped onion
- 1/2 cup bell pepper, chopped Any color
- 1/2 cup grated cheddar cheese Can use a mix of sharp and mild for flavor
- 1/2 cup grated mozzarella cheese
- 1/4 teaspoon garlic powder
- Salt to taste Avoid over-salting early as canned soup and cheese add sodium.
- 2 tablespoons olive oil
Instructions
Preparation
- Preheat the oven to 350°F (175°C). Grease a 9x13-inch baking dish with a little oil or nonstick spray.
- Bring a large pot of salted water to a boil. Add the spaghetti and cook according to package directions until al dente. Drain and set aside.
- Heat the olive oil in a skillet over medium heat. Add the chopped onion and bell pepper. Sauté until softened and translucent, about 4–6 minutes. Season lightly with a pinch of salt.
Mixing Ingredients
- In a large mixing bowl, combine the cooked spaghetti, shredded chicken, chicken broth, cream of mushroom soup, diced tomatoes with green chilies, sautéed onion and bell pepper, garlic powder, and several grinds of black pepper. Taste and add salt as needed. Mix until everything is evenly coated.
Baking
- Transfer the mixture into the prepared baking dish and spread it out evenly. Sprinkle the grated cheddar and mozzarella over the top.
- Bake in the preheated oven for about 25 minutes, or until the cheese is bubbly and lightly golden. If you like a browner top, switch to broil for 1–2 minutes, watching closely to avoid burning.
- Remove from the oven and let rest for 5 minutes before serving to allow the casserole to set slightly.