01 -
Heat olive oil or butter in a large pot over medium heat. Add chopped onion and garlic, cooking until softened and fragrant, about 5 minutes.
02 -
Add crushed tomatoes and broth, stirring to combine. Let simmer for 10 minutes to develop flavor.
03 -
Reduce heat to low and stir in heavy cream. Season with salt, black pepper, and crushed red pepper flakes to taste.
04 -
Add cheese tortellini to the simmering soup and cook according to package instructions, approximately 4 to 6 minutes, until tender.
05 -
Stir in fresh basil or spinach if using. Ladle soup into bowls and garnish with additional cracked pepper, basil, or parmesan as desired.