Veggie Sausage and White Bean Casserole

Name: Veggie Sausage and White Bean Casserole
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Ingredients: 1 teaspoon (3-4 sprays) rapeseed oil (or olive oil); 12 vegan sausages; 2 large red onions, peeled, halved and cut into wedges; 2 x 400g (14 oz) tins chopped tomatoes; 2 x 400g (14 oz) tins (total drained weight 520g /3 cups beans) cannellini beans; 1 tsp ground cumin; 1 tsp ground coriander; a generous pinch of chilli powder, more if you would like heat; 2 tablespoons tomato puree; 250g (1 cup) vegetable stock (2 vegetable stock cubes); a good grinding of black pepper