- 1 Tbsp olive oil, divided
- 200g portobello mushrooms, roughly chopped
- 1/2 red onion, finely diced
- 2 cloves garlic, crushed
- 1 Tbsp no added salt tomato paste
- 2 tsp Marmite™
- 1 tsp ground cumin
- 1 tsp smoked paprika
- 400g can black beans
- 125g cooked brown rice
- 1 cup rolled oats (80g)
- 1 egg
- 6 wholemeal or wholegrain buns/rolls
- 3 Tbsp light aioli or mayonnaise
- 1/2 red onion, sliced
- 2 tomatoes, sliced
- 80g lettuce