in a 10"x15" baking dish
ground black pepper
shredded cheddar cheese
1Preheat oven to 350 degrees. In a large bowl, combine the beef, breadcrumbs, onion, eggs, salt and pepper, and mix well. Pat out meat mixture into a 14x18 inch rectangle on a piece of wax paper.
2Spread cheese over the meat, leaving a 3/4-inch border around the edges. Roll up jellyroll fashion to enclose the filling and form a pinwheel loaf. Press beef in on both ends to enclose the cheese.
3Place in a 10x15 inch-baking dish. Bake in the preheated oven 1 hour, or until internal temperature reaches 160 degrees.