So it was actually really lovely and dh is gone back for seconds and he is a spud man.
I used a 500g pack of 5% fat minced beef and browned that with a diced onion and 2 medium carrots in some olive oil for about 10 mins.
Then added a beef stock cube, 500ml of water, 2 squeezes of tomato purée, a few dashes of Worcester sauce and a teaspoon of dried mixed herbs and seasoned well. Cooked loosely covered for 20 mins. frozen peas added for last minute.
Chopped and boiled the swede/turnip and when cooked, mashed it smoothly and mixed through a bit of grated Red Leicester and seasoned it and layered the turnip mix over the mince and left it in the oven for 20 mins on 180.
Book says that kcal per serving are 354, protein 27g, fat 16g, fibre 10, carbs 21. 5 servings.
Recipe calls for 10% fat mince and doesn't include the cheese in the above figures so I adjusted accordingly.