01 - Pat the chicken breasts dry and season both sides evenly with salt, black pepper, and Italian seasoning.
02 - Place the seasoned chicken breasts in a single layer at the bottom of the crockpot.
03 - In a medium mixing bowl, whisk together the heavy cream, chicken broth, grated Parmesan cheese, chopped sun-dried tomatoes, minced garlic, and red pepper flakes until well combined.
04 - Pour the sauce mixture evenly over the chicken breasts in the crockpot. Cover with the lid and cook on low for 4 to 5 hours, or until the chicken is tender and reaches an internal temperature of 165°F.
05 - Transfer the chicken breasts to serving plates, spoon the creamy sauce from the crockpot over each portion, and garnish generously with fresh chopped basil.