First, make the dressing. In a small bowl or jar, whisk together the olive oil, garlic, lemon juice, vinegar, maple syrup or honey, salt and pepper. Set aside.
In a large bowl, combine quinoa, spinach, cucumber, tomatoes, avocado, and green onions.
Drizzle salad with dressing and gently stir until salad is coated with the dressing. Season with salt and pepper, to taste. Serve.