Jamie Oliver Easy Lasagne Recipe (Healthy & Budget)

Ingredients

• 2 sprigs fresh rosemary
• 100 g smoked streaky bacon
• 1 tbsp olive oil (plus extra for the white sauce)
• 1 kg minced beef
• 1 kg minced pork
• 4 carrots
• 2 onions
• 4 sticks celery
• 2 heaped tbsp tomato purée
• 4 x 400g tins plum tomatoes
• 350 g dried lasagne sheets
• 2 leeks (medium)
• 2 tbsp olive oil
• 2 fresh bay leaves
• 4 tbsp plain flour
• 1 litre semi-skimmed milk
• 150 g mature Cheddar cheese (coarsely grated)
• 1 whole nutmeg (for grating)
• sea salt
• black pepper