Instructions

1 Mash the beans.

2 Heat olive oil in pan, add the grated kumara and cook for 4-5 minutes or until soft. Add this mixture to the beans in a bowl, then add the red onion, chilli flakes and garlic.

3 Lightly beat the egg yolks and combine with the bean and kumara mixture.

4 In another bowl, whisk the egg whites together, fold into the kumura mixture, then form into 4 patties and place on a baking tray.

5 Preheat the grill and coat the upper side of the patties with cooking oil spray. Cook patties under the grill for 3-4 minutes or until golden, then turn over, coat with cooking oil spray again and grill the other side for a further 3 minutes, or until golden.

6 Place lettuce leaves on the slices of toasted bread, top with burgers and finish with mayonnaise, tomato, cheese and cucumber slices.

Recipe supplied by Healthy Food Guide reader, Amanda Gameson (Dunedin)