Best Creamy Tomato Tortellini Soup Recipe - How to Make Creamy Tomato Tortellini Soup

Ingredients

• 1 tbsp. butter
• 1/2 medium onion, diced
• 4 cloves garlic, minced
• 3 tsp. Italian seasoning
• 1/2 tsp. red pepper flakes
• 3 tbsp. all-purpose flour
• 3 tbsp. tomato paste
• 3 c. low-sodium chicken or vegetable broth
• 1 (28-oz.) can diced tomatoes
• 4 c. cheese tortellini
• 1/3 c. heavy cream
• 1/2 c. freshly grated Parmesan
• 3 c. spinach, packed
• Kosher salt
• Freshly ground black pepper
• 2 tbsp. thinly sliced basil, for garnish