Wash the beans and let them drip off. Drain the corn. Clean and wash spring onions and cut them diagonally into medium sized pieces. Wash and clean the tomatoes and cut them into medium-sized pieces. Wash the cutlets, dab dry and cut into fine strips.
Peel onion and cut about 2/3 into fine strips. Dice remaining onion and put aside. Heat the oil in a grill pan and fry the pork cutlets on top all around. Season with salt and pepper. Add onion strips and fry for about 5 minutes. Add beans, corn, 2/3 of the spring onions, tomatoes and peas and fry for another 5 minutes. Season with salt and pepper. Meanwhile grate cheese roughly. Sprinkle the remaining spring onions, onions and cheese over the pan.
Add beans, corn, 2/3 of the spring onions, tomatoes and peas and fry for another 5 minutes. Season with salt and pepper. Meanwhile grate cheese roughly. Sprinkle the remaining spring onions, onions and cheese over the pan. Garnish with parsley. Serve with sour cream and tortilla chips