2 hr 30
Put the broccoli, cauliflower, baby sweetcorn, mangetout, carrot and shiitake mushrooms in the slow cooker.
Heat the oil in a frying pan over a high heat. Reduce the heat to medium, add the onion and fry, stirring, for 2 minutes. Add the garlic and fry for a further 1–3 minutes until the onion is softened. Add the Chinese five-spice powder and stir for 30 seconds.
Add the stock,