Combine soup, milk and Tuscan Chicken Slow-Cooker Sauce Mix in a 6-quart or larger slow cooker. Stir in chicken and vegetables.
In medium bowl, combine biscuit mix, water and Sea Salt & Herb Seasoning; mix until well combined. Dollop over chicken mixture in slow cooker.
Cook on low 6-8 hours or until dumplings are cooked through.