This is one first class hero.

A New Jersey granny with a big heart recently went viral for making a salami and cheese sandwich for her mailman — who thought it was the best thing since sliced bread.

Antoinette Giancamilli, better known as Nonna Netta, has a tradition of presenting her postman, Kyle Frankenfield, with homemade food when he delivers the mail to her Alpha, NJ home, just east of the Pennsylvania border.