Creamy Parmesan Italian Sausage Soup

Ingredients:
1 lb Italian sausage (mild or spicy, your choice)
1 medium onion, diced
3 cloves garlic, minced
4 cups chicken broth
2 cups heavy cream
1 can (14.5 oz) diced tomatoes (with juices)
1 cup carrots, diced
1 cup celery, diced
1 cup frozen spinach (or fresh, if preferred)
1 cup grated Parmesan cheese
1 tsp Italian seasoning
Salt and pepper to taste
Olive oil (for cooking)
Fresh parsley (for garnish, optional)
Instructions:
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