Shepherd’s pie with swede and carrot mash

Ingredients

• spray oil
• 1 large onion, finely diced
• 2 cloves garlic, crushed
• 1 bay leaf
• 2 teaspoon chopped fresh thyme
• 3 celery sticks, diced
• 21oz lean lamb mince
• 11oz passata
• 2/3 cup (5fl oz) reduced-salt beef stock
• 2 teaspoons wholegrain mustard
• 1 tablespoon Worcestershire sauce
• 1 small swede (about 16oz), peeled and diced
• 2 large carrots (13oz), sliced
• 1 cup (5oz) frozen peas
• 1/4 cup (1oz) parmesan, grated