In a medium saucepan, bring the vegetable broth to a rolling boil over medium heat.
Once boiling, carefully add the couscous, stirring gently. Cover the saucepan with a lid and remove it from the heat. Let it sit undisturbed for about 5 minutes, or until the couscous has fully absorbed the broth.
After 5 minutes, fluff the couscous using a fork to separate the grains. Allow it to cool for a few minutes.
In a large mixing bowl, combine the diced cucumber, halved cherry tomatoes, finely chopped red onion, fresh parsley, mint, and crumbled feta cheese (if using). Stir gently to mix.
In a separate small bowl, whisk together the olive oil, freshly squeezed lemon juice, lemon zest, and a pinch of salt and pepper until emulsified.
Pour the dressing over the couscous and vegetable mixture. Using a spatula, gently toss everything together until all ingredients are well coated with the dressing.
Taste and adjust the seasoning with additional salt and pepper as needed.
Allow the salad to sit for at least 15 minutes at room temperature, or refrigerate it for a bit to let the flavors meld beautifully. Serve chilled or at room temperature for the best taste.
Notes
Serve chilled or at room temperature for the best taste.