I make patties and freeze them.
Put some potatoes to boil, just as they are softening, add in some courgettes in small cubes, when potatoes are done drain well.
Add some chopped onions and garlic and mash all together.( I also added some cooked peas to the last lot, spose you could add any veg you have handy)
I stirred through some curry powder, added salt and pepper to taste and left to cool.
Shape into patties about half an inch thick and coat in breadcrumbs. (2 bags for a £1 in Tesco atm so I've stocked up!)
Freeze with greaseproof paper between layers. I usually fry these straight from frozen, til hot and golden brown. You can reheat them in the oven, but I can't remember how long they took, sorry.