This Slow Cooker Creamy Tomato Chicken Spaghetti is an easy, creamy, and comforting dinner made with tender chicken, tomato sauce, Alfredo sauce, parmesan cheese, and spaghetti. It is a simple family-friendly meal that comes together with very little hands-on work.

Easy slow cooker dinners are always helpful on busy days, and this Slow Cooker Creamy Tomato Chicken Spaghetti is a delicious option when you want something warm, filling, and simple. The chicken cooks slowly in a rich combination of marinara sauce, Alfredo sauce, diced tomatoes, and seasonings until it is tender enough to shred. Once the chicken is ready, cooked spaghetti is stirred into the creamy tomato sauce for a complete pasta dinner.
This recipe is a great choice when you want a comforting chicken spaghetti dinner without spending a lot of time at the stove. The slow cooker does most of the work, and the pasta is added at the end so it stays tender and easy to toss with the sauce. The result is a creamy tomato chicken pasta with plenty of flavor from basil, oregano, garlic powder, parmesan cheese, and the two sauces.
How to Make Slow Cooker Creamy Tomato Chicken Spaghetti
Step one: Place the boneless, skinless chicken breasts into the slow cooker. Season the chicken with dried basil, dried oregano, garlic powder, salt, and pepper. You can adjust the seasonings slightly to fit your taste.

Step two: Pour the Alfredo sauce, drained petite diced tomatoes, and marinara sauce over the seasoned chicken in the slow cooker. Spread the sauces around the chicken so everything cooks evenly and the chicken is covered with the creamy tomato mixture.

Step three: Cook the chicken until it is fully cooked and tender. You can cook it on low for 6 hours or on high for 4 hours. Once the chicken is done, shred it directly in the slow cooker and stir in the shredded parmesan cheese.

Step four: When the chicken and sauce are ready, cook the spaghetti according to the package directions. Drain the pasta well and set it aside until you are ready to add it to the slow cooker.
Step five: Add the cooked spaghetti to the slow cooker and gently toss everything together until the pasta is coated in the creamy tomato chicken sauce. Serve warm and enjoy this easy slow cooker chicken spaghetti.
Cooking Tips
- No spaghetti? This recipe also works well with other pasta shapes. Penne, rotini, or fettuccine can be used instead of spaghetti.
- Add more vegetables: If you want to add extra flavor and texture, diced onions, sliced green peppers, or sliced mushrooms can be added with the sauces so they cook along with the chicken.
- Shred the chicken easily: Once the chicken is tender, use two forks to pull it apart in the slow cooker, then stir it into the sauce before adding the parmesan cheese.
- Cook pasta separately: For the best texture, cook the spaghetti according to the package directions and add it at the end instead of cooking it in the slow cooker.

Spaghetti Recipes
If you have extra spaghetti in the box, you can use it for more simple pasta dinners. Chicken spaghetti casserole, taco spaghetti, and parmesan garlic spaghetti are all easy ideas for turning spaghetti into another flavorful meal.
This Slow Cooker Creamy Tomato Chicken Spaghetti is a practical dinner for anyone who enjoys creamy pasta, tender shredded chicken, and a rich tomato-based sauce. It is easy to prepare, uses simple ingredients, and makes a hearty meal with very little effort.

Slow Cooker Creamy Tomato Chicken Spaghetti
Ingredients
- 1.5 pounds chicken breast, (boneless and skinless)
- 1 teaspoon dried basil
- 1/2 teaspoon dried oregano
- 1/2 teaspoon garlic powder
- 1/4 teaspoon salt
- 1/8 teaspoon pepper
- 15 oz Alfredo sauce
- 14.5 oz petite diced tomatoes, (drained)
- 15 oz marinara sauce
- 1 cup parmesan cheese, (shredded)
- 10 oz spaghetti
Instructions
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Place the chicken breasts in the slow cooker. Season with dried basil, dried oregano, garlic powder, salt, and pepper. Adjust the seasoning to taste if needed.
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Pour the Alfredo sauce, drained petite diced tomatoes, and marinara sauce over the chicken.
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Cook on low for 6 hours or on high for 4 hours, until the chicken is cooked through and tender. Shred the chicken, then stir in the shredded parmesan cheese.
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Cook the spaghetti according to the package directions. Drain well and set aside.
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Add the cooked spaghetti to the slow cooker and toss until the pasta is evenly coated with the creamy tomato chicken sauce. Serve warm.
Notes
- No spaghetti? Use penne, rotini, or fettuccine if that is what you have on hand.
- Add more: Diced onions, sliced green peppers, or sliced mushrooms can be added with the sauces and cooked with the chicken.
- For best texture: Cook the pasta separately and stir it into the sauce just before serving.
Nutrition
| Carbohydrates: 47g
| Protein: 33g
| Fat: 19g
| Saturated Fat: 9g
| Cholesterol: 106mg
| Sodium: 1393mg
| Potassium: 835mg
| Fiber: 4g
| Sugar: 9g
| Vitamin A: 607IU
| Vitamin C: 12mg
| Calcium: 250mg
| Iron: 3mg
