Name: Crockpot Chicken Spaghetti
Prep time: 5 min
Cook time: 180 min
Total time: 185 min
Ingredients: 1½ pounds boneless skinless chicken breasts (about 3 medium); 1 bell pepper (red or green, diced); 1 (10.5 ounce) can diced tomatoes with chilies (such as Rotel, drained); ½ cup chicken broth; 1 cube chicken bouillon; 1¼ teaspoons Italian seasoning; ¾ teaspoon garlic powder; ½ teaspoon onion powder; ½ teaspoon salt; 8 ounces spaghetti; 1 (12 ounce) can evaporated milk; 1½ tablespoons cornstarch; 2 cups shredded cheddar cheese; 3 tablespoons shredded Parmesan cheese

Holly’s Recipe Highlights: Crockpot Chicken Spaghetti

Flavor: Creamy, cheesy, and savory with a hint of spice from the tomatoes and chilies, with plenty of Italian-inspired flavor.

Why Make It: The slow cooker cooks the chicken until tender while building a flavorful, creamy sauce, and cooking the pasta separately keeps it perfectly al dente.

Skill Level: This recipe is easy enough for a weeknight, with simple prep and no complicated sauce-making.

Total Time: 3 Hrs 5 Mins (5 Min Prep) Servings: 4 Cooking Method: Slow Cooker

Ingredient Notes

chicken , broth , pepper , cornstarch , evaporated milk , bouillon , garlic powder , cheese , Italian seasoning , onion powder , parmesan , Rotel , spaghetti , salt and pepper with labels to make Crockpot Chicken Spaghetti.

Chicken Breasts: Boneless, skinless chicken breasts cook until tender enough to shred, while boneless, skinless thighs also work and add a slightly richer flavor.

Bell Pepper: Red bell pepper adds a touch of sweetness, while green pepper has a more savory bite. Or replace with frozen diced peppers for an easy shortcut.

Diced Tomatoes With Chilies: Drain the tomatoes well to keep the sauce from becoming too thin, and choose mild or hot varieties depending on how much heat you prefer.

Italian Seasoning: Use your favorite store-bought or homemade Italian seasoning.

Spaghetti: Cook the spaghetti just until al dente since it will soften slightly when stirred into the hot sauce. Replace with another medium or long pasta shape.

Cheddar Cheese: Sharp cheddar adds the most flavor. Use freshly shredded cheese from a block for a smoother sauce, or replace with pre-shredded cheese.

How to Make Crockpot Chicken Spaghetti

adding peppers and seasonings to chicken to make Crockpot Chicken Spaghetti.

adding milk to pot to make Crockpot Chicken Spaghetti.

Add chicken, pepper, tomatoes, broth, bouillon, and seasonings to the slow cooker. Cook until tender.
Cook and drain the spaghetti (full recipe below).
Shred the chicken. Stir in the evaporated milk and cornstarch mixture, then add the chicken, cheese, and spaghetti.

Prefer an oven version? Try my baked chicken spaghetti casserole.

Whisk the Cornstarch: Whisk the cornstarch into the evaporated milk until completely smooth before adding it to the slow cooker to help prevent lumps.
For the Perfect Consistency: If the sauce becomes too thick after adding the pasta, loosen it with a splash of warm broth or evaporated milk.
Serve Soon: Avoid leaving the finished spaghetti on the warm setting for hours, as the pasta will continue to absorb the sauce and become softer over time.