Season rump steaks with salt and pepper and grill them on the barbecue, turning them for about 3 minutes from both sides or at a core temperature of 52-54 ° C medium rare. Let the steaks cool down and cut them into strips
Peel onions and cut them into strips. Wash spring onions, shake dry, clean and cut into fine rings. Drain corn and kidney beans. Grate cheese roughly
Halve the avocados, remove the seeds, remove the flesh from the skin with a spoon and place in a bowl. Crush the flesh into a pulp with a fork. Peel and finely chop the shallot and garlic. Wash the chilli pepper, remove the core and cut into fine strips. Mix shallot, garlic and chili with avodado, season with lime juice, salt and pepper
Cover half of each tortilla cake with 1/6th of each of the rump steak strips, onions, spring onions, corn, kidney beans and grated cheese. Fold them up and grill them from both sides on the grill until the cheese has melted
Halve the tortilla cake, serve with guacamole and sour cream