01 - Set the oven to 400°F and line a baking sheet with parchment paper.
02 - Toss the cubed butternut squash with 1 tablespoon olive oil, salt, and pepper until evenly coated.
03 - Arrange the squash in a single layer on the prepared baking sheet and roast for 20 to 25 minutes, turning halfway through, until golden and tender. Allow to cool slightly.
04 - Whisk together the remaining olive oil, lemon juice, Dijon mustard, honey, salt, and freshly ground black pepper in a small bowl until emulsified.
05 - In a large bowl, gently combine the roasted squash, salad greens, red onion slices, pomegranate seeds, most of the crumbled feta, and most of the toasted pumpkin seeds.
06 - Drizzle the prepared dressing over the salad and toss gently to ensure even coating.
07 - Transfer the salad to a serving platter and garnish with the remaining feta and pumpkin seeds. Serve immediately.