Boil the water and pour over the couscous, then cover with a lid for 5 minutes.
Dice onions, dice the rest of the vegetables and crush the garlic.
In a large saucepan heat the oil then saute the onions for a couple of minutes. Add the rest of the veggies and roast for 5 to 10 minutes or until soften but not too much.
Add garlic and continue roasting for addition 2 minutes.
Turn the heat off, sprinkle lemon juice and mix.
Add the couscous and mix well
Serve warm or cold, as a main meal or side dish.