If desired, sauté onion and garlic in a little oil until onion is lightly browned. Or skip this step and simply combine all ingredients except spinach in a pot, bring to a boil, and let cook until desired thickness is reached. Turn off heat, stir in spinach until it wilts, taste and add pepper and additional salt if desired. This tastes even better the next day as the flavors intensify overnight. Leftovers also freeze well.View Nutrition Facts