In a large skillet, cook and stir diced chicken in half the Simmering Sauce included in the box. Cook until completely browned. Add drained tomatoes and the remaining Simmering Sauce and cook on high until liquid has cooked out. Mix in about half of the finishing sauce.

Spoon chicken mixture on top of the sliced sourdough or Italian bread, top with additional finishing sauce and shaved Parmesan cheese.

Enjoy open-faced.