Cook quinoa according to package directions. Remove from heat; fluff with a fork, cover and set aside.
Meanwhile, steam squash in a steamer basket over medium heat for about 5-7 minutes or until tender. Add to quinoa mixture and toss to combine. Add salad greens, apple, parsley and sunflower seeds; toss again.
In a small bowl, whisk lemon juice, honey, olive oil, sea salt and pepper. Drizzle over quinoa mixture and toss to combine. Season to taste and serve.