Heat the oven to 400ºF / 200ºC. Put the tomatoes on a baking sheet, drizzle with the oil and roast for 25 min, then set them aside.
Cook the couscous according to the packaging instructions and when is ready drain and place it in a mixing bowl. Stir in the lemon juice and leave it to cool on a room temperature.
When the couscous has cooled down gently stir the cooked tomatoes, crumbled feta and basil.
