Pork mince and leek casserole recipe

I was feeling the need for a comforting casserole the other day. I also had some pork mince that needed using. I found this recipe:

Serves 4

1lb pork mince
1lb leeks, sliced
2lb potato sliced
1 onion sliced
Some mushrooms
bay leaf
Thyme
750ml Stock
Tomato puree
Butter

Line bottom of casserole pan with half the potatoes. Cover with sliced onion and mushrooms. Fry pork until brown. Add leeks and cook for 5 mins. Add 750ml stock, 1 bay leaf, squirt of tomato puree and a sprig of thyme. Cook for 10 mins. Check seasoning. Pour into the casserole. Cover with remaining potatoes. Brush potatoes with butter. Cook for 1 hour at 180C, removing lid for final 30mins.

The result was very comforting and filling. I dry-fried the mince which was quite lean, so the whole thing was pretty healthy. I shall do this again as it was very economical.