Cook the orzo according to package instructions, drain and rinse under cold water. Add a little oil to prevent sticking and leave to cool
Briefly cook or blanch the beans and peas, drain and leave to cool
Cut the halloumi into smaller pieces and quickly fry in a pan. Leave to drain on kitchen paper.
Make a dressing by combining the ingredients. You can mash the avocado with a fork but the dressing will be smoothest by using a stick blender to add it all together.
Add all ingredients together except the halloumi and salad and mix to combine
When serving add the salad leaves and the halloumi on top. Sprinkle some basil over the top