Preheat oven to 400°F. Toss butternut squash with 1 tbsp olive oil, salt, and pepper. Spread on a baking sheet and roast for 25-30 minutes until tender.
In a large bowl, whisk together remaining olive oil and balsamic vinegar to make the dressing.
Add roasted squash, dried cranberries, pecans, and salad greens to the bowl with dressing. Toss gently to combine.
Sprinkle feta cheese over the salad if using, and serve immediately.
Notes
This salad is perfect for fall gatherings and can be customized with your favorite nuts or dried fruit.