Preheat oven to 375 degrees.
In a large bowl, whisk the Basil Olive Oil and Cranberry Pear Balsamic Vinegar until thoroughly combined.
Add the rosemary and squash and toss to coat and combine evenly.
In a large roasting pan lined with parchment, arrange the squash in a single layer, drizzling with any remaining marinade.
Sprinkle liberally with sea salt and freshly ground black pepper.
Roast the squash for 30-35 minutes, stirring a few times until golden brown.