01 - Preheat the oven to 400°F and line a baking sheet with parchment paper.
02 - Toss the cubed butternut squash with 2 tablespoons olive oil, 1/2 teaspoon salt, and 1/4 teaspoon ground black pepper. Spread evenly on the prepared baking sheet.
03 - Roast for 25–30 minutes, turning once halfway through, until the squash is golden and fork-tender. Let cool slightly.
04 - Toast pecan halves in a dry skillet over medium heat for 3–4 minutes until fragrant. Set aside.
05 - Whisk together extra virgin olive oil, balsamic vinegar, maple syrup, Dijon mustard, salt, and black pepper in a small bowl.
06 - In a large bowl, combine mixed greens, roasted squash, sliced red onion, toasted pecans, and feta cheese if using.
07 - Drizzle the dressing over the salad and toss gently to combine. Serve immediately.