In a saucepan, bring the vegetable broth to a boil. Once boiling, remove from heat and stir in the couscous. Cover and let it sit for about 5 minutes until the couscous absorbs the liquid.
Fluff the couscous with a fork and transfer it to a large mixing bowl. Allow it to cool to room temperature.
In a small skillet, heat the olive oil over medium heat. Add the minced garlic and sauté for about 1 minute until fragrant, being careful not to let it brown. Remove from heat.
Once the couscous has cooled, add the sautéed garlic, lemon zest, and lemon juice to the bowl. Mix well to combine.
Add the cherry tomatoes, cucumber, red onion, chopped parsley, and optional cumin. Gently fold all ingredients together until evenly mixed.
Season with salt and pepper to taste, adjusting the acidity or seasoning as necessary.
Chill in the refrigerator for at least 30 minutes before serving to allow the flavors to meld together.
Notes
Serve the salad in a large bowl garnished with additional chopped parsley and lemon wedges for a refreshing touch.