Layer the base: Place the chicken breasts in the bottom of the Crockpot.
Sprinkle with the Italian dressing mix (or homemade blend), black pepper, and salt.
Add flavor: Scatter the minced garlic and sun-dried tomatoes over the chicken. Pour in the chicken broth around the sides.
Top with cream cheese: Add the cubed cream cheese on top. This helps it melt evenly into the sauce later.
Cook low and slow: Cover and cook on Low for 4–5 hours or High for 2.5–3 hours, until the chicken is tender and easy to shred.
Low is best for juicier chicken.
Shred and thicken: Remove the chicken to a plate and shred with two forks. Whisk the sauce in the Crockpot until the cream cheese is fully melted and smooth.
Add Parmesan and greens: Stir in the Parmesan. If using spinach, add it now and let it wilt for 2–3 minutes.
Combine: Return the shredded chicken to the Crockpot and stir to coat with the sauce.
Taste and adjust seasoning with salt, pepper, or red pepper flakes.
Serve: Spoon over warm pasta, rice, or mashed potatoes. Garnish with chopped basil or parsley for a fresh finish.