In a heavy bottom pan, dry roast the couscous until slightly browned. You can skip this step but roasting it brings out a lovely flavour just as it does in our local rawa for upma
Add 1.5 cups of hot water to it and boil till done. Drain the water and set aside till cool.
Mix all the dressing ingredients in the salad bowl and stir.
Add in all the ingredients apart from feta cheese and mix with dressing.
Add feta and gently mix so that it doesn't become a mush.