Preheat your oven to 400°F. Spread the cubed butternut squash on a baking sheet, drizzle with olive oil, and season with salt and pepper. Roast for 20-25 minutes or until tender and slightly caramelized. Let cool.
In a large bowl, combine the mixed greens, cooked quinoa, dried cranberries, chopped pecans, feta cheese, and red onion.
In a small bowl, whisk together the olive oil, apple cider vinegar, maple syrup, Dijon mustard, salt, and pepper until well combined.
Pour the dressing over the salad mixture and toss gently to combine.
Add the roasted butternut squash to the salad and toss lightly. Serve immediately or chill in the refrigerator for about 30 minutes before serving for a refreshing taste.