225 g (8 oz) short-cut spaghetti, or long spaghetti broken into 15 cm (6 inch) lengths
2 tbsp olive oil
300 ml (1/2 pint) 1 1/4 cups chicken stock
1 tsp lemon juice
1 small cauliflower, cut into florets
2 carrots, sliced thinly
125 g (4 1/2 oz) mangetout (snow peas), trimmed
60 g (2 oz) 1/4 cup butter
1 onion, sliced
225 g (8 oz) courgettes (zucchini), sliced thinly
1 garlic clove, chopped
350 g (12 oz) frozen shelled prawns (shrimp), defrosted
2 tbsp chopped fresh parsley
25 g (1 oz) 1/4 cup Parmesan, grated
salt and pepper
1/2 tsp paprika, to sprinkle
4 unshelled prawns (shrimp), to garnish (optional)