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One-Pot Creamy Cajun Chicken Spaghetti

This One-Pot Creamy Cajun Chicken Spaghetti is a rich, cheesy, flavor-packed weeknight pasta made with chicken, the Cajun trinity, Rotel, and melty cheese, all cooked in one pot with no draining required. Easy, comforting, and full of Louisiana flavor!
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Ingredients

  • 1½ –2 lbs boneless skinless chicken breasts or thighs cubed
  • 2 Tbsp olive oil or butter
  • 1 yellow onion diced
  • 1 green bell pepper diced
  • 2 celery ribs diced
  • 2 –3 Tbsp minced garlic
  • 3 Tbsp Creole Trinity & Herb seasoning
  • 1 tsp Cajun seasoning optional, for extra kick
  • 1/2 tsp salt
  • ½ tsp black pepper
  • 1 10 oz can Rotel (original or mild, undrained)
  • 1 10.5 oz can cream of chicken with herbs soup
  • 1 10.5 oz can cream of celery
  • 3½ –4 cups chicken broth
  • 1/2 lb spaghetti
  • 1 handful shredded sharp cheddar
  • 2 hands shredded mozzarella or Monterey Jack

Optional:

  • Splash of heavy cream or half-and-half
  • Handful of chopped parsley or green onions

Instructions

Brown the chicken

  • Heat oil/butter in a large Dutch oven or deep pot over medium-high heat.
  • Add chicken, season lightly with Creole Trinity & Herb, and brown just until golden (doesn’t have to cook through). Remove and set aside.

Build the flavor base

  • In the same pot, add onion, bell pepper, and celery. Sauté 3–4 minutes until soft.
  • Add garlic and cook 30 seconds until fragrant.

Season + sauce

  • Stir in remaining Creole Trinity & Herb, Cajun seasoning, paprika, and black pepper.
  • Add Rotel, cream of chicken, cream of mushroom/celery, and chicken broth. Stir until smooth.
  • Cook the pasta right in the sauce
  • Bring mixture to a gentle boil.
  • Add broken spaghetti, pressing it down so it’s mostly submerged.
  • Reduce to medium-low, cover, and simmer 12–15 minutes, stirring every few minutes so it doesn’t stick.

Finish it off

  • Add the chicken back in and cook 2–3 more minutes until pasta is tender and chicken is cooked through.
  • Stir in cheeses (and a splash of cream if using) until melted and creamy.

Rest + serve

  • Turn off heat and let sit uncovered 5 minutes to thicken.
  • Finish with parsley or green onions.
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