Perfect for two, this risotto is low in calories and can be mixed up by replacing the prawns with smoked haddock instead. Serves 2,300 kcals per serving 1 large onion, chopped 120g Arborio rice 8-10 quartered mushrooms 1 stock cube, made up Lemon juice 1 bag of spinach, shredded 200g prawns, net weight Black pepper…