Chop the celery and garlic, slice the onion and bell pepper.
Heat ½ tbs of olive oil or duck fat in a large casserole dish and gently soften the celery and onion. Add the garlic, rosemary and red pepper (if fresh) and cook for a couple of minutes under cover. Add the mushroom and tomatoes and cook for 5 minutes under cover until soft.
Add the drained beans, mixed olives, jarred red pepper and the sliced sundried tomatoes, stir for a minute then add the chopped meat. Heat through. Add a drop of water if it's too sticky.
Chop the herbs and scatter over the dish together with the spring onion.
Serve with boiled rice, mashed potatoes or wholesome bread.