Pork, cider and apple casserole

This one hardly has anything from the garden in it, just onions, as my apples are neither ripe nor the right sort for this recipe, but it's delicious, so here's the recipe anyway. It takes about 1.5 - 2 hours to cook in total and feeds 6-8, depending on appetite.

Ingredients
2-3 tbsp olive oil
2 large onions
3 cloves of garlic (I used 3 tsp of frozen garlic)
500g stewing pork cut into large chunks
1 can of cider (mine was 440 ml)
3 tbsp Dijon mustard
3 tbsp plain flour
1 tsp dried thyme
salt and pepper to taste
4 apples - Golden Delicious or Jonagold
4 heaped tbsp full fat natural Greek yogurt

1. Peel the onions and chop them very small.
2. Put the olive oil in a large pan or casserole dish and heat.
3. Add the onions and fry until tender, stirring occasionally.
4. Peel garlic and finely chop, then add to pan and stir.
5. After a couple of minutes, add the stewing pork. Fry until white.
6. Pour over the cider.
7. Turn up the heat until gently boiling, then put the lid on, turn the heat right down and allow to simmer for 1 hour (don't worry about it going frothy, this isn't a problem).
8.  Peel and core the apples and cut into segments (about 12 per apple).
9. Add the apple to the pan and continue to simmer for 10 more minutes.
10. Mix the Dijon mustard, flour, thyme and salt and pepper. Add mixture to pan and stir Cook for 5 more minutes.
11. Add yogurt, stir and heat through until warm.
I served mine with mashed potato and peas.