Salmon and vegetable lasagne | Tesco Real Food

Ingredients

• 2 fillets of salmon, skinned and boned
• 2 leeks
• 1 onion
• 2 plum tomatoes
• tube of tomato purée
• 1 red pepper
• 2 courgettes
• handful fresh baby spinach
• 50g (2oz) mature Cheddar cheese, grated
• 50g Gruyère cheese, grated
• 50g (2oz) Parmesan cheese, grated
• 12 sheets of egg lasagne
• 600ml (1pt) milk
• 25g (1oz) plain flour
• 25g butter
• 20ml olive oil