Preheat the oven to 400°F and line a baking sheet with parchment paper.
Roast the squash: Cut the acorn squash across the middle and remove the seeds using a spoon.
Drizzle the inside of the squash with olive oil and season with salt. Place squash open side up on the prepared baking sheet.
Bake for 30-40 minutes depending on the size of the squash. It is done when the squash is tender and golden brown. Set aside.
Prepare the quinoa according to package directions using low-sodium vegetable broth and set aside.
Make the stuffing: in a medium saucepan, heat 1 tablespoon of olive oil. Add cranberries, celery, red onion, and pecans, and sauté until tender. Add the quinoa and combine. Continue to sauté until heated through.
Prepare the Honey Balsamic Vinaigrette Dressing. Set aside.
Place the quinoa stuffing in a large bowl. Add the feta and slowly add the balsamic honey dressing until the preferred consistency.
Spoon the quinoa stuffing into the warm or room temperature roasted squash. Top with more feta and chopped parsley if desired.