1. Preheat the oven to gas, 200°C, fan 180°C fan.
2. In a very large roasting tin or on 2 baking trays, put all of the vegetables and the veggie sausages. Drizzle over the honey mustard dressing and veg oil and season well with salt, black pepper and a pinch of dried herbs. Use your hands to toss together, making sure everything is well coated. Spread the vegetables out in an even layer.
3. Put the tin into the oven and roast for 40-45 mins, stirring after 20 mins, until the vegetables are tender.
4. Divide the sausages between plates with a scoop of the roasted veg. Drizzle over a little of the extra honey mustard dressing and add some salad to the side before serving.