Start by placing the chicken breasts, heavy cream, chicken broth, butter, garlic powder, and Cajun seasoning into your slow cooker. Stir everything gently to combine. This base will create the rich, creamy sauce that makes this dish irresistible.
Cover your slow cooker and set it to low heat for 4–6 hours, or high heat for 2–3 hours. You’ll know it’s ready when the chicken is fully cooked and reaches an internal temperature of 165°F. The aroma filling your kitchen during this time is simply amazing!
Once the chicken is done, remove it from the slow cooker and shred it using tongs or forks. You can also dice it into chunks if you prefer. Return the shredded chicken to the slow cooker to soak up the flavors of the sauce.
Next, stir in your uncooked pasta. Make sure it's fully submerged in the liquid for even cooking. Cover the slow cooker and cook on high heat for another 20–30 minutes, or until the pasta is al dente.
Finally, add the grated Parmesan cheese. Stir it in until melted and smooth. Cover for another 5 minutes to ensure the cheese fully incorporates. Then, give the dish one last stir and get ready to serve!