Step 1

Drain, rinse and dry the chickpeas thoroughly, then tip into the bowl of a food processor. Pulse until lightly broken up into coarse crumbs.

Step 2

Add the onion, garlic, spices, parsley, flour and some seasoning, and continue to pulse until combined. Using your hands, gently form the mixture into 4 patties about 10cm in diameter and 2cm thick.

Step 3

In a large pan, heat the oil and fry the falafels on each side for 2-3 mins or until golden (you may need to do this in batches). Lightly griddle the burger buns on the cut side in a griddle pan, or toast under the grill.

Step 4

Spread one side of each bun with hummus, top with a falafel burger, add a handful of watercress, then pop the remaining bun half on top.