Italian Sausage and Orzo Soup

Bahan-bahan (6 porsi)

• 1 pound ground Italian sausage (mild or spicy)
• 1 medium white onion, peeled and diced
• 2 medium carrots, diced
• 1 celery stalk, diced
• 6 cloves garlic, minced or pressed
• 1/2 teaspoon crushed red pepper flakes
• 1 (15-ounce) can fire-roasted diced tomatoes
• 8 cups chicken stock (or beef or veggie stock)
• 1 tablespoon Italian seasoning
• 1 cup uncooked orzo pasta
• fine sea salt and freshly-cracked black pepper
• 2 large handfuls fresh baby spinach or kale
• optional toppings: freshly-grated Parmesan, chopped fresh basil and/or parsley