This dish is perfect for making ahead, as the flavors continue to deepen over time. Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently on the stovetop or in the microwave, spooning extra sauce over the beef to keep it moist.
What you’ll get is exactly what slow-cooked comfort should be: melt-apart beef roast soaked in tangy-sweet cranberry balsamic sauce, tender onions, and rich juices that turn into the perfect spoon-over-the-top gravy — a holiday-ready meal with almost no effort.
