Sous Vide Butternut Squash with Tahini Sauce

Ingredients

• 1 large butternut squash (about 2 1/4 pounds), seeded and cut into 1x2-inch wedges
• 2 red onions, peeled and cut into 1-inch wedges
• 2 1/2 tablespoons extra virgin olive oil, divided
• Kosher salt
• 3 tablespoons tahini
• 2 tablespoons water, plus more as needed
• 1 1/2 tablespoons freshly squeezed lemon juice, plus more as needed
• 1 small clove garlic, minced
• 1/4 cup pine nuts
• 1 tablespoon za’atar seasoning
• 1 tablespoon chopped fresh parsley