In a small bowl whisk together the olive oil, lemon juice, garlic, vinegar, salt, and pepper. Set aside.
In a large bowl, combine quinoa, capers, cucumber, tomatoes, basil, peppers, and onions.
Mix salad with dressing and add salt and pepper. Stir until salad is fully coated with the dressing.
Top it with sliced avocado and microgreens then serve it.