Combine the first 10 ingredients in your slow cooker. Cover and cook on the low setting for 8 hours. Season with salt and pepper. Sprinkle servings of the stew with chopped green onions and serve.
Note: This recipe is designed for an oval-shaped slow cooker with a 5 litre or more capacity. Thrifty chorizo sausages are available in the meat department. To roast, place in a non-stick or parchment paper lined baking dish. Roast at 375 degrees F for 20 minutes, turning once, or until cooked through.