Serves 4-6 - Time 40-45 min 175g strong mature cheddar 50g gruyère 50g parmesan 50g white bread, crusts cut off Large sliced tomato 280g macaroni 700ml full-fat milk 50g butter 45g plain flour 1 rounded tsp mustard Prep: Finely grate all the cheeses, keeping them separate. Place bread in processor - blitz to crumbs. Mix 25g of the cheddar and one-third of the parmesan ...