You can always make Sloppy Joes. The essentials are the beef that you have, ketchup (aka tomato sauce), and toasted bread. Brown the beef, add the ketchup, heat the mixture through and serve on toasted bread or as a sandwich using two pieces of toasted bread. You can also mince up onions, green Bell peppers, and/or carrots, cook them in the beef fat until transparent and/or soft, and then add the ketchup.
And then there is Salisbury Steak:
Ingredients:
* 1½ pounds ground beef
* 2 tablespoons grated onion
* 1 teaspoon salt
* ½ teaspoon dried marjoram leaves, crushed
* 1/8 teaspoon pepper
* 1 envelope mushroom gravy mix (I prefer to make gravy from scratch with butter, boullion, flour and mushrooms)
* 1 can (3 to 4 ounces) sliced mushrooms, drained
* 2 tablespoons red wine, optional
In a large bowl combine ground beef, grated onion, salt, marjoram, and pepper; mix well. Divide meat into 6 portions; shape into oval patties about ¾-inch thick. Broil Salisbury steak 3 inches from heat for 3 to 4 minutes; turn and broil other side of Salisbury steak for about 4 minutes, or until done as desired. Prepare gravy mix as package directs; stir in mushrooms and wine, if using. Heat through. Pour gravy over salisbury steak patties and serve with potatoes. Salisbury steak recipe serves 6.
There are a bunch more recipes here and here, with some more exotic recipes here.