It depends entirely what you have in your store cupboard!
I would do this:
Chop a large onion and finely chop 2-4 cloves of garlic.
If you have any ginger, peel and finely chop that, as well as a chilli.
Fry the onion gently in veg/sunflower oil, with the garlic, ginger and chilli. Add any/all of the following - ground cumin/coriander/turmeric and a couple of cardomom pods. If you haven't got any of those spices, use some curry powder instead, and any dried herbs that you have/like.
Season with salt and pepper.
Fry for a couple of minutes then add in your turkey, along with whatever veg you have. Chuck in any leftover gravy or some water with a stock cube. If you like a tomatoey curry, chuck in a tin of tomatoes.
Then cover and simmer for about 20 minutes.