Spaghetti Squash Lasagna

Ingredients (15)

• 2 medium spaghetti squash
• 1 tablespoon plus 2 teaspoons olive oil
• 2 teaspoons kosher salt
• 3/4 teaspoon black pepper
• 1 pound ground turkey
• 2 teaspoons Italian seasoning
• 1/4 teaspoon red pepper flakes
• 2 cloves garlic
• 1 (24-ounce) jar good-quality tomato pasta sauce
• 1 tablespoon red wine vinegar
• 1 (10-ounce) pack frozen spinach
• 1 cup part-skim ricotta cheese
• 1 cup shredded fontina, mild provolone, mozzarella, or similar melty cheese
• 1/4 cup grated Parmesan cheese
• Chopped fresh parsley