I make a sausage casserole similar to spa, I use pork sausages but take off the skin and make sausage meat balls.
I fry a diced onion, diced carrot, red pepper, garlic, then add the sausage meat balls, add a tin of Heinz five beans, tin of chopped toms, chilli powder, parprika, large handful of red lentils, peas and sweetcorn. It serves 4 and only needs around 4 sausages.