Spaghetti Squash with Meat Sauce

Bahan-bahan (6 porsi)

• 2 tablespoons olive oil, (divided)
• 1 large onion, (chopped)
• 1½ pounds ground beef or turkey
• 1 cup water
• 9 ounces tomato paste
• 2 tablespoons red wine vinegar
• 2 medium garlic cloves, (minced)
• 1 teaspoon salt
• freshly ground black pepper, (to taste)
• 1 teaspoon whole mixed pickling spices
• ½ stick cinnamon
• 1 large (about 3 pounds) spaghetti squash
• ¼ teaspoon salt
• ¼ teaspoon freshly ground black pepper
• 4 tablespoons (½ stick) unsalted butter
• 1 large avocado, (pitted, peeled and diced)
• 12 large cherry tomatoes, (red or yellow (or a combo of both), halved)
• ½ cup fresh Parmesan or Pecorino Romano cheese shavings
• 2 tablespoons chopped fresh flat leaf Italian parsley