01 - Place the chicken thighs in the bottom of the slow cooker in a single layer, ensuring even distribution for consistent cooking.
02 - In a medium bowl, whisk together the pesto, ranch seasoning, chicken broth, heavy cream, and Parmesan cheese until completely smooth and well combined.
03 - Pour the sauce mixture evenly over the chicken thighs, ensuring each piece is thoroughly coated.
04 - Cover and cook on LOW for 4–6 hours, or until the chicken reaches an internal temperature of 165°F and is tender throughout.
05 - Transfer the chicken to a serving platter, spoon the remaining sauce over the top, and garnish with fresh basil and extra Parmesan if desired.