Lentil bolognese - Master recipes

Ingredients

• 3 tbsp olive oil -
• 2 onions, finely chopped -
• 3 carrots, finely chopped -
• 3 celery sticks, finely chopped -
• 3 garlic cloves, crushed -
• 500g bag dried red lentils -
• 2 x 400g cans chopped tomatoes -
• 2 tbsp tomato purée -
• 2 tsp each dried oregano and thyme -
• 3 bay leaves -
• 1l vegetable stock -
• 500g spaghetti -
• parmesan or vegetarian cheese, grated, to serve -