Healthy lasagne - Good Food Middle East

Ingredients

• 1 tbsp olive oil
• 1 large onion (250g), finely chopped
• 320g carrots, finely chopped
• 2 celery sticks (140g), finely chopped
• 2 bay leaves
• 500g 5% beef mince
• 3 large garlic cloves, finely grated
• 400g can chopped tomatoes
• 2 tbsp tomato purée
• 1½ tsp vegetable bouillon powder
• 400ml semi-skimmed milk
• 30g wholemeal flour
• generous pinch of nutmeg
• 6 sheets wholemeal lasagne (125g)
• 25g finely grated parmesan