Chop onions, garlic, spinach, and artichokes, and cube cream cheese so it melts smoothly. Having everything ready makes assembly quick and easy.
Place chicken, broth, onion, garlic, artichokes, and seasoning into the slow cooker. Layer cream cheese on top so it melts gradually into the stew.
Cover and cook on LOW for 6–7 hours or HIGH for 3–4 hours. Avoid opening the lid frequently as this slows down cooking.
Once cooked, remove the chicken and shred it using two forks. Return shredded chicken to the pot for even flavor distribution.
Add chopped spinach and cornstarch slurry in the last 20 minutes. Spinach wilts quickly, and the slurry thickens the stew to a creamy consistency.
Stir in Greek yogurt and shredded cheese, taste, and adjust seasoning as needed. Serve hot for the best flavor and texture.