Veggie sausage casserole - Good Food Middle East

Ingredients

• 2 tbsp olive oil
• 8 vegetarian sausages
• 1 large red onion, finely chopped
• 2 celery sticks, finely chopped
• 2 carrots, finely chopped
• 3 garlic cloves, finely chopped
• 1 tsp sweet smoked paprika
• 1 tsp fennel seeds (optional)
• few sprigs of thyme, rosemary or sage
• 2 tbsp tomato purée
• 1 tbsp balsamic vinegar
• 400g can plum tomatoes
• 250ml vegetable stock
• 400g can butter beans
• 60g fresh vegetarian pesto
• warm crusty bread, to serve (optional)