Creamy Sausage Tortellini Soup

Ingredients: 2 tablespoon vegetable oil 1/2 pound hot or sweet Italian sausage, casings removed 3/4 cup chopped onion 1 teaspoon minced fresh garlic 1/3 cup all purpose flour 2 (14 1/2 oz.) can chicken broth 3/4 teaspoon Italian herb seasoning 1/4 teaspoon salt 1/4 teaspoon pepper 1 (9 oz.) package refrigerated fresh cheese tortellini 2 (12 oz.) can PET® Evaporated Milk 1 (6 oz.) package baby spinach, coarsely chopped (6 cups) grated Parmesan cheese