1. In a large saucepan, combine tomato sauce, stock, 500ml water, smoked paprika and  bring to the boil.
  2. Add macaroni and gently boil for 8-10 minutes. For the last 3 minutes of cooking, add cannellini beans and mixed frozen vegetables.
  3. Season with salt and pepper.
  4. To serve, divide soup between four bowls and top with parmesan.