Pork, butter bean and apple casserole

Another autumnal day in July, calling for another autumnal comforting casserole.  So, today, pork, butter bean and apple with mash and peas.  Sautee one chopped onion with celery, diced pork shoulder, garlic, mixed herbs, pepper, courgette, green beans and mushrooms. When a bit cooked add a spoonful of English mustard and a sprinkle of flour to thicken the sauce.  Turn over until the flour is thoroughly mixed, then add some chicken stock.  Simmer for a good half hour, and add chopped apple and butter beans, and a sprinkle of paprika.  Simmer a bit longer and serve with mash (or rice).  It was OK, nothing more.