Beef Roast with Mushroom Stuffing

A flank steak spread with Dijon mustard, layered with a savory mushroom stuffing, rolled up jelly-roll style, and braised in a Dutch oven until fork-tender. The pan drippings become a mustard-spiked gravy served on the side. This is old-school Sunday dinner cooking at its best.

The stuffing is straightforward but well-built. Sauteed onions and chopped mushrooms get mixed with parsley, chives, tomato paste, bread crumbs, and paprika. The tomato paste adds concentrated umami and color without making the stuffing wet. Bread crumbs hold everything together so the filling stays put when you slice the roll.

Spreading Dijon on the steak before the stuffing does two things. It adds a sharp, peppery layer of flavor between the meat and the filling, and its acidity helps tenderize the inner surface of the flank steak during braising.

Browning the rolled steak in rendered bacon fat is the move that sets this apart. That 10 minutes of browning on all sides creates a deep crust and infuses the exterior with smoky richness. Then the beef broth goes in, the lid goes on, and an hour of gentle simmering transforms a tough cut into something you can slice cleanly into beautiful pinwheel rounds.

Pro Tips

• Tie the roll tightly with kitchen string at 1-inch intervals. Loose rolls fall apart during braising and the stuffing escapes.
• Use butcher’s twine, not regular thread. It won’t melt or break during the long cook.
• Let the meat rest for 10 minutes before slicing. This sets the juices and keeps the pinwheels from falling apart.
• Slice with a sharp, thin knife in one smooth motion. Sawing back and forth tears the stuffing loose.

Variations

• Spinach and cheese: Replace the mushroom stuffing with wilted spinach and crumbled feta or blue cheese.
• Italian style: Use sun-dried tomatoes, basil, and provolone in the stuffing and swap the gravy for a red wine reduction.
• Slow cooker: Brown the roll on the stovetop, then transfer to a slow cooker with the broth and cook on low for 6-8 hours.