Place chicken thighs in the bottom of the slow cooker.

In a small bowl, whisk together honey, soy sauce, garlic, and ketchup.

Pour the sauce over the chicken.

Cover and cook on low for 6–7 hours or high for 3–4 hours, until chicken is cooked through and tender.

Optional: To thicken the sauce, remove chicken and set aside. Whisk 1 tbsp cornstarch with 2 tbsp water, stir into the sauce, then cook on high for 15–20 minutes until thickened. Return chicken and coat in sauce.

Serve hot with rice, noodles, or steamed veggies.