In a large saucepan or stock pot, combine the broth, tomato sauce, Italian seasoning, onion powder, garlic powder, 1/2 teaspoon salt, and 1/4 teaspoon black pepper. Set the pan over medium-high heat and bring to a low boil.

Add the tortellini and cook for the recommended time on the package, stirring frequently and lowering the temperature as needed to keep the liquid at a low boil/high simmer.

Season to taste with salt and black pepper.

Ladle the stew into bowls and top with parmesan cheese.