Form ground beef into 12 small patties, approx. ½ inch thick. Sprinkle with cumin, coriander, fennel, and salt and pepper (to taste).
In a large skillet, heat 1 Tablespoon olive oil over medium heat. Place the patties in the pan and cook to desired doneness. (Approx. 4 min. each side for medium)
In a large mixing bowl, toss quinoa, scallions, tomatoes, cucumber with the remaining 3 Tablespoons of olive oil. Salt and Pepper to taste.
Divide salad greens into 4 bowls. Add ¼ quinoa mixture and 3 burgers per bowl, and one lemon wedge. If desired serve with a dollop of hummus, crumbled feta cheese, and a warm pita.