In a medium bowl, toss together cooked quinoa with diced apples, sun-dried tomatoes, scallions and parsley.
In a small bowl, whisk together olive oil, lemon juice, grated garlic, salt and pepper. Drizzle vinaigrette over the quinoa mixture and toss well to combine.
Serve immediately or store in an air-tight container in the refrigerator for up to 5 days.