Made my own version of this - comes in at 312 calories. I've created a recipe if anyone would like a copy?
I added a dollop of fig chutney and substituted some of the lamb with chopped carrot. 160g of lamb mince made 4 portions (one portion is half an aubergine).
I also use 20% fat lamb mince for extra deliciousness! Served it with buttered shredded savoy cabbage... absolutely scrummy!