Take a large sauté pan and pour in 1 jar of Nanina’s Fra Diavolo sauce. Place on medium heat and bring sauce to a gentle boil. Add the mussels to the sauté pan and cover. Please check after 5 minutes. When mussels open, the dish is done! Take contents from the sauté pan and pour into a large serving bowl. The natural juices of the mussels combined with Nanina’s Fra Diavolo sauce will have made the perfect zuppa for dipping Italian bread or just a great appetizer!