For deeper flavor: Use bone-in beef chuck, which imparts even more richness to the sauce during the slow braise.
Cheese substitutions: If you can’t find Kefalotyri, Parmesan or Pecorino Romano make excellent alternatives without sacrificing authenticity.
Vegetable additions: For a heartier, stew-like dish, add diced carrots, celery, or potatoes when you sauté the onions. These vegetables absorb the tomato sauce and become tender as they cook alongside the beef.
Orzo caution: Different brands of orzo absorb varying amounts of liquid. Adjust with extra broth or hot water if the mixture becomes too dry during baking.
Spice it up: Add a pinch of red pepper flakes to the sauce when simmering for a mild kick of heat.
Storage & Reheating: Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently on the stovetop with a splash of water or broth to loosen the sauce.