1. Preheat oven to 450ºF. Combine beef, egg, bread crumbs, Parmesan, shallot, garlic, tomato paste, salt and pepper in a large bowl. Mix with your hands to combine well.
2. Brush a 6-cup muffin tin with olive oil. Gently roll meat into 6 balls and place each in a muffin cup. Bake until cooked through, about 20 minutes.