sentence: cook ground lamb with oil in a pan sentence: add flour and stir sentence: add chopped onion garlic carrot and mushrooms sentence: add a little worcestershire sauce and tomato puree and stir sentence: sprinkle some chopped rosemary on top sentence: add some chicken stock to the pan sentence: prepare some boiled potatoes and mash them with butter sentence: sprinkle some pepper in the potatoes sentence: put the lamb mixture in a baking pan and add some peas sentence: cover the pan with mashed potatoes sentence: spread some parmesan cheese on top