User tortellini soup with italian Sausage

Ingredients:

• 1 lb (450g) Italian sausage, casings removed
• 1 onion, diced
• 3 cloves garlic, minced
• 4 cups chicken broth
• 2 cups water
• 1 (14.5 oz) can diced tomatoes
• 1 teaspoon dried basil
• 1 teaspoon dried oregano
• 1/2 teaspoon dried thyme
• Salt and pepper to taste
• 9 oz (250g) refrigerated cheese tortellini
• 3 cups fresh spinach leaves
• Grated Parmesan cheese, for serving
• Fresh basil leaves, chopped (for garnish)