Beef and bean burgers with mushroom buns

Instructions

1. Preheat oven to 200°C. Line a baking dish with baking paper.
2. In a bowl, combine black beans and beef. Using wet hands, form mixture into 4 patties.
3. Place mushrooms on prepared tray. Drizzle over 1 tablespoon of the olive oil and season with pepper. Cook in the oven for 8-10 minutes, until tender.
4. Meanwhile, heat remaining oil in a non-stick frying-pan over medium-high. Cook patties for 3 minutes each side, or until browned and cooked through to your liking. Place a slice of cheese on each patty and return to oven until melted. Remove from oven.
5. Top four mushrooms, stalk side up, with lettuce. Layer on patty, mustard, beetroot, carrot, onion and jalapenos. Top with remaining mushroom ‘lid’, skewer and serve immediately.