Preheat oven to 350.
In a large mixing bowl, crush the stuffing using potato masher. (You could grind in a food processor or blender. I didn't because I didn't want to dirty another dish.)
Add the ground beef, eggs, balsamic vinegar, Italian seasoning, salt and pepper. Combine well.
Press the meat mixture into a 9x13 glass baking dish.
Bake in the preheated oven for 45 -50 minutes, or until cooked through.
Serve Stuffing Meatloaf with bread and butter, and favorite veggie.