Creamy Tortellini Soup

Ingredients

• 1 medium yellow onion
• 1 medium carrot
• 1 medium celery stalk
• 3 cloves garlic
• 2 tbsp olive oil
• 1-1/2 tsp dried Italian seasoning
• 1 tsp kosher salt
• 1/4 tsp freshly ground black pepper
• 3 tbsp all-purpose flour
• 32 ounces low-sodium vegetable or chicken broth
• 28 ounces canned fire-roasted crushed tomatoes
• 1 ounce Parmesan cheese
• 9 ounces refrigerated cheese tortellini
• 1/2 cup heavy cream
• 5 ounces baby spinach
• 2 tsp balsamic vinegar