Add the chicken sausage, grape tomatoes, onion, 2 cups of the chicken broth, Italian seasoning, and sea salt to the crockpot. Cover and cook on LOW for 4 – 6 hours or HIGH for 2 – 3 hours, until the tomatoes burst.
24 oz chicken sausage, 24 oz grape tomatoes, 1 yellow onion, 4 cups chicken broth, 1 Tbsp Italian seasoning, ½ tsp sea salt