Peel the beets, and cut them into thin slices.
Place the beets in a pot and cover with water. Bring to a boil over high heat, then reduce to a simmer and cook for 20 to 25 minutes, or until tender when pierced with a fork. Drain and let cool.
Slice the cucumbers into thin rounds. In a large bowl, combine the sliced beets, cucumbers, red onion, parsley, dill, and mint.
In a separate bowl, whisk together the za’atar, garlic, lemon juice, maple syrup, olive oil, and salt until fully mixed.
Pour the dressing over the salad and toss gently to combine.
Transfer to a serving bowl or platter. Garnish with additional parsley, dill, and mint leaves, then sprinkle with crushed roasted pistachios just before serving.