Once sauteed, add the onion and garlic to a slow cooker over high heat ... When ready to serve the soup, garnish with extra cilantro, low-fat sour cream or other favorite toppings.
In a 3- to 4-quart slow cooker ... be green enchilada sauce. The tortilla pieces will dissolve during cooking, adding flavor and some thickening to the soup.
For a thicker soup, add 2–3 tablespoons cornflour mixed with a little water at the same time as the milk or cream. You will need a slow cooker that holds at least 4 litres/7 pints for this recipe.
Usually, almost all of the vegetables that make up the bulk of the soup are left up to the cook's discretion. This slow-cooker version keeps things hearty with cubes of tender potatoes ...