Assemble arugula, cucumbers, tomatoes, olives, onion, pepper and half of Feta cheese in a large bowl.
To make the dressing, simple add all dressing ingredients to a Mason jar, fit with the lid and shake vigorously until well-combined.
Pour about half of dressing over salad and toss. Then, top with remaining Feta cheese and serve with additional dressing on the side.
Notes
Salad will keep in an airtight container in the refrigerator for up to three days. You can easily add more arugula to the salad to make even more servings as needed.