Two Mexican tortillas with melted cheese in between is known to the Mexicans as a quesadilla. Whatever you call it, when you cut it into pieces this Latino snack is an instant favorite!
Slice the onion into rings, the mushrooms into quarters and the pepper into strips. Heat 2 tablespoons of olive oil and fry the onion until glazed. Add the peppers and fry for another 5 minutes until the peppers are soft. Remove from the pan onto a plate. Heat the remaining 2 tablespoons of olive oil and fry the mushrooms until brown. Mix the mushrooms with the onion and peppers and season with salt and a pinch of cayenne pepper. Place a tortilla in the pan. Sprinkle it with a layer of cheese, spoon in some of the mushroom mixture, add some sour cream and sprinkle more cheese on top. Cover with another tortilla and press firmly with a spatula. Once the bottom layer of cheese has melted, turn the whole thing over (you may have to put your hand on the top tortilla to support it) and brown the other side and melt the cheese. Repeat with the other two tortillas. Cut the tortillas into four parts using a sharp knife. Add a little sour cream and sprinkle with chopped chives and coriander.
