Prep: Preheat the oven to 430°F. Place all ingredients except for the stock or wine in a large casserole dish. Toss well to coat all ingredients in oil. Spread everything out in the dish.
Roast: Bake in the preheated oven for 30 minutes, or until starting to brown.
Deglaze the dish: Very carefully remove the casserole dish from the oven and turn over the sausages. Gently stir the vegetables. Pour the stock or wine over the ingredients in the dish.
Finish baking: Bake for another 20 minutes, or until the sausages are cooked all the way through and the potatoes are tender when pierced with a fork.
Notes
Recipe lightly adapted from Mary Berry.Nutrition is without salt, as this will be individual.