Line a cookie sheet with foil and spray with non stick spray. Preheat your broiler.
Combine falafel mix with 1/3 cup water in a medium bowl, until water is absorbed, about 5-10 minutes.
Form falafel mixture into 12 1" balls and place on prepared pan.
Flatten balls into 1 1/2" patties.
Broil 4" from heat until golden brown, roughly two minutes on each side.
Divide salad, cucumbers, and tomatoes evenly on 4 plates. Place 3 patties on each salad. Drizzle evenly with tzatziki dressing and serve immediately.