Preheat the oven to 200°C (180°C fan).

Prepare the chicken according to package instructions, placing it in the center of a roasting pan.

Surround the roast chicken with peeled and chopped carrots, parsnips, and potatoes. Drizzle with olive oil and season with salt and pepper.

Roast in the preheated oven for 40-50 minutes or until the vegetables are golden brown and crispy.

In a separate pan, cook vegan sausages and vegan bacon according to package instructions.

Prepare the cauliflower cheese by cooking cauliflower florets and then coating them with a vegan cheese sauce. Bake until the cheese is bubbly and golden.

While everything is roasting, make the Yorkshire puddings according to the package instructions.

Prepare the onion gravy by dissolving onion gravy granules in hot water, stirring until smooth. Heat on the stovetop until thickened.

Prepare the stuffing mixture according to package instructions.

Once everything is cooked, assemble the Vegan Roast Dinner by arranging the roast chicken, roasted vegetables, vegan sausages, vegan bacon, cauliflower cheese, Yorkshire puddings, and stuffing on a serving platter.

Serve hot, drizzled with onion gravy. Enjoy your delicious and satisfying Vegan Roast Dinner!