Method
Preheat oven to 220°C/Gas 7. 428° F
Place all the ingredients in a food processor and blend for 5-10 seconds, until the mixture is fairly coarse (you can use a hand-held blender). Push the mixture down with a spatula and blend for a further 10 seconds.
Remove the blades from the processor, wet your hands under the cold water tap and shape the mixture into 20 small balls. I made them the size of a meatball and then flattened them a bit into patties. This only made about 8 balls.
Line a large baking tray with greaseproof paper. Place the balls on the tray and flatten slightly with the back of the spoon.
Bake for 15-18 minutes until lightly coloured. I cooked them on one side for 10 minutes then flipped them over and cooked the other side for another 10 minutes. They are not the most firm so be careful when you take them off the baking tray and place them on the bun, lettus wrap, or tortilla. Remove from the oven and allow to rest. Serve with sweet potato wedges and a crunchy raw salad of mangetout, radishes, grated carrot, sliced celery and fennel dressed with a squeeze of lemon juice.