Preheat oven to 350 degrees F.
Dice the corned beef brisket into small portions using either a knife or food processor. In a large bowl, mix the potatoes, meat, onion, salt, and pepper together, and then place mixture in a roasting pan. Bake for 30 minutes until brown.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy of Jay Hajj at Mike's City Diner, Boston, MA