Squash mac 'n' cheese

Ingredients

• 1 leek
• 1 onion
• olive oil
• 1 butternut squash (1.2kg)
• 1 heaped tablespoon plain wholemeal flour
• 500ml semi-skimmed milk
• 450g dried macaroni
• 2 heaped teaspoons English mustard
• 300g cottage cheese
• 40g Parmesan cheese
• 1 x 400g tin of cannellini beans
• 2 cloves of garlic
• 1 teaspoon dried red chilli flakes
• 2 sprigs of fresh rosemary
• 1 slice of wholemeal bread (50g)