1. In a large pot, heat the olive oil over medium heat. Add the diced onion and sauté until translucent, about 5 minutes. Stir in the minced garlic and red pepper flakes, cooking for an additional minute until fragrant.
2. Pour in the chicken broth and bring to a gentle boil. Add the cheese ravioli and cook according to the package instructions, usually around 5-7 minutes, until the ravioli is tender.
3. Reduce the heat to low and stir in the heavy cream and sun-dried tomatoes. Let the soup simmer gently for 5 minutes, allowing the flavors to meld together.
4. Add the fresh spinach and cook until wilted, about 2-3 minutes. Stir in the grated Parmesan cheese until melted and the soup is creamy.
5. Season with salt and pepper to taste. If desired, garnish with fresh basil before serving.

This soup is a testament to the power of simple ingredients, much like the family meals I grew up with. Remember, cooking is about trusting your senses and adjusting flavors to your liking.