Bring a large pan of salted water to the boil and add the asparagus. Cook for 4 - 5 minutes, until the asparagus is just cooked through. Drain, refresh under cold running water and drain again.
Heat the olive oil in a frying pan and fry the halloumi cheese for a few minutes on each side, until golden brown. Mix together the red onion, tomatoes, lime juice and coriander and season well with sea salt and black pepper. Toast the pitta breads and split in half.
Divide the asparagus between the warm pitta breads and add a large spoonful of hummus. Place the halloumi cheese on top and finish with a generous spoonful of the tomato and onion salsa.
Hot Tips: The salsa can be made in advance. These are very nice even cold for a picnic and a healthy option to a sandwich.