- 1 small onion, quartered
- Small can (about 210g) red kidney beans, drained and rinsed
- 250g lean beef mince
- Wholemeal breadcrumbs (from 1 slice of bread)
- 2 tsp mild chilli powder, or to taste
- 1 egg, beaten
- 1 tbsp tomato purée
- To serve:
- 1 extra large tomato, sliced
- 1 red onion, sliced
- Lettuce leaves
- 4 wholemeal rolls
Shape the mixture into 4 patties and chill until you're ready to barbecue.
Barbecue for 5-7 minutes each side.