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Recipe

Chicken Spaghetti

This colorful crowd-pleaser that incorporates vegetables, whole grains, protein, and dairy in one dish. Serve with some fresh, frozen, canned, or dried fruit for a meal that contains all of the food groups.

Cook 34 min Serves 4 Difficulty Hard 1254 kcal

High-protein

Chicken Spaghetti

TL;DR

  • 1254 kcal · 26.4 g protein per serving
  • Ready in 34 min · serves 4
  • High-protein

Chicken spaghetti is a home-style American classic that earns its place at the dinner table through sheer practicality and comfort. This version takes the familiar casserole format and gives it a thoughtful, everyday-healthy makeover without sacrificing the creamy, cheesy appeal that makes the dish so beloved. At its heart, this is a one-dish meal built around tender whole wheat spaghetti, lean diced chicken breast, and a generous helping of colorful bell peppers and onion, all bound together by a low-sodium cream of chicken soup and finished with a modest sprinkle of reduced-fat cheddar and Parmesan. The result is a hearty, satisfying bake that looks as inviting as it tastes, with a lightly golden top that signals it is ready to come out of the oven.

What makes this particular preparation especially well-suited for anyone keeping an eye on their intake is the way it quietly maximizes nutrition per serving. The whole wheat spaghetti brings more fiber to the plate than its refined counterpart, which helps the meal feel more filling. The chicken breast is a lean source of protein, and the generous two cups called for here mean each portion carries a solid protein foundation to support satiety. The bell peppers and onion do double duty, adding volume, color, and a gentle sweetness that balances the creamy sauce, while also contributing fiber and a host of vitamins. The use of low-sodium diced tomatoes and low-sodium cream of chicken soup keeps the sodium load in check, a detail that matters for anyone tracking their daily numbers. The cheeses are portioned thoughtfully rather than piled on, so you still get that rich, savory flavor and a pleasing texture from the melted cheddar and the sharpness of the Parmesan, but in amounts that keep the dish reasonable. The entire meal comes together in a single baking dish, which makes portioning straightforward and leftovers easy to manage.

A few practical notes can make this dish turn out even better. Because the spaghetti continues to absorb liquid as it bakes, it is worth draining it well after cooking and perhaps slightly undercooking it by a minute or two if you prefer a firmer bite in the finished casserole. The step of covering the dish for the first 20 minutes of baking is not just a formality; it traps steam and allows the flavors to meld while keeping the pasta from drying out. The final uncovered stretch is what creates that appealing golden top, so resist the urge to skip it. For a make-ahead option, the entire mixture can be assembled in the baking dish, covered, and refrigerated for a day before baking; just add about five minutes to the covered baking time. This is also a forgiving canvas for using up whatever vegetables are on hand, though the sweet and mild bell peppers are hard to beat in this combination.

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Ingredients — For 4 servings

  • 4 piece sprays of vegetable oil spray 400 g
  • 4 ounces spaghetti, whole wheat uncooked 113 g
  • 1 teaspoon olive oil (or cooking oil of choice) 5 g
  • 1 medium red bell pepper, thinly sliced 120 g
  • 1 medium green bell pepper, thinly sliced 120 g
  • 1 piece onion, chopped 110 g
  • 2 cups cooked chicken breast, skinless and diced (8 ounces) 260 g
  • 1 can (14.5 ounces) tomatoes, low-sodium, diced undrained 411 g
  • 1 can (10.75 ounces) cream of chicken soup, low-sodium 305 g
  • 1/2 cup cheddar cheese, reduced-fat shredded 47 g
  • 1/4 cup Parmesan cheese, shredded or grated 24 g
  • 1/4 teaspoon black pepper 1 g

Nutrition per serving

1254 kcal

26.4 g 37.6 g 113.3 g
Protein26.4 g
Carbohydrates37.6 g
of which sugars7.1 g
Fat113.3 g
of which saturates20.3 g
Fiber3.8 g
Sodium772 mg

Nutrition computed from USDA FoodData Central per-ingredient data (curated reference table, engine/systems/recipe/data/ingredient_nutrition_db.json).

Instructions

  1. Wash your hands with soap and water before you begin, and rinse any fresh produce you'll be using.

  2. Preheat the oven to 350 °F.

  3. Lightly spray an 8-inch square baking dish with vegetable oil spray.

  4. Prepare the spaghetti using the package directions, omitting the salt and oil.

  5. Drain well in a colander.

  6. Meanwhile, in a large skillet, heat the oil over medium heat, swirling to coat the bottom.

  7. Cook the bell peppers and onion for 4 to 5 minutes, or until tender, stirring occasionally.

    ~4 min
  8. Pour into a large bowl.

  9. Stir in the remaining ingredients, including the spaghetti.

  10. Pour into a baking dish.

  11. Bake, covered, for 20 minutes.

    ~20 min
  12. Bake, uncovered for 10 minutes, or until the mixture is warmed through and light golden brown on top.

    ~10 min

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Frequently asked questions

Can I use regular spaghetti instead of whole wheat?

Yes, regular spaghetti will work fine in this recipe. Keep in mind that whole wheat pasta has more fiber and a slightly nuttier flavor that pairs well with the creamy sauce. If you do swap, the cooking time and liquid absorption will be very similar, so no other adjustments are needed.

Why do I need to cover the dish for the first 20 minutes of baking?

Covering the casserole traps steam and heat, which gently cooks the mixture through without drying out the pasta. It also gives the flavors time to meld together. The final 10 minutes uncovered allow the top to turn light golden brown and develop a slightly firmer, more appealing texture.

Can I prepare this dish ahead of time and bake it later?

Absolutely. Assemble the full mixture in the baking dish, cover it tightly, and refrigerate for up to a day. When you are ready to bake, add about five minutes to the covered baking time to account for the chilled start. The uncovered browning time stays the same.

What can I serve alongside this chicken spaghetti to round out the meal?

This dish already covers the protein, grain, and vegetable groups, so a simple side of fruit is a great complement, as the original recipe notes. A handful of grapes, an apple, or a small side salad with a light vinaigrette would also balance the creamy, savory casserole nicely.

Is there a good way to use leftover chicken for this recipe?

Yes, leftover cooked chicken breast is ideal here. The recipe calls for two cups of diced cooked chicken, which can come from a rotisserie bird or a batch you cooked earlier in the week. Just ensure it is skinless and diced into bite-sized pieces so it distributes evenly through the dish.

Sources

  1. USDA MyPlate Kitchen — Recipe adapted from USDA MyPlate Kitchen.
  2. USDA FoodData Central — Nutrition panel computed from USDA FoodData Central per-ingredient data via a curated reference table.

Jan Horák — Founder & Engineer, Kaloria

Jan Horák is the founder and lead engineer of Kaloria, an AI-powered calorie and nutrition tracking app for iOS and Android. He builds and ships the app's photo and voice food-logging pipeline himself and writes about the nutrition math, product tradeoffs, and app-comparison data behind it.