Start by cooking the couscous according to package instructions until fluffy, then allow it to cool completely before adding it to your salad bowl.
While the couscous cools, chop the cucumber into bite-sized pieces, slice the cherry tomatoes in half, and finely slice the purple onion so they blend seamlessly into your salad.
In a small bowl, whisk together Dijon mustard, lemon juice, maple syrup, olive oil, kosher salt, and black pepper until well combined to create a tangy dressing.
In a large mixing bowl, combine the cooled couscous with chopped vegetables, crumbled feta cheese, kalamata olives, fresh dill, and parsley for an explosion of flavors.
Pour the prepared dressing over the salad mixture and gently toss everything together until evenly coated with flavors.
Let your salad chill in the refrigerator for at least 30 minutes before serving to allow the flavors to meld together wonderfully and enjoy this refreshing dish!