Mexican Bean and Corn Burgers - Meat Free Monday

Ingredients

• 1 tablespoon olive oil
• 1 onion, diced
• 1 garlic clove, crushed
• 3 cups (or 2 x 400 g tins) cooked black beans, divided
• 1½ teaspoon ground cumin
• 1 teaspoon chilli powder
• 1 teaspoon sea salt
• ½ teaspoon smoked paprika
• black pepper or red pepper flakes, to taste
• ⅔ cup quick oats or breadcrumbs, plus extra as needed
• ¾ cup frozen or tinned sweetcorn, thawed or drained
• 4 ripe tomatoes, diced
• ½ red onion, finely diced
• 2 tablespoons chopped fresh coriander
• lime juice, to taste
• salt and pepper
• 4-6 wholewheat or seeded burger buns
• crispy lettuce
• avocado slices
• lime wedges
• Tabasco or hot sauce