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+ servings

Slow-Roasted Roast Beef with Mustard, Garlic, and Thyme

Servings: 8


  • 3 1/2 - 4 lb top sirloin roast
  • 1 tbsp Dijon mustard
  • 1/2 tbsp olive oil
  • 3 cloves of garlic minced
  • 2 tsp thyme leaves
  • Sea salt and freshly cracked pepper to taste


  • Preheat the oven to 250 degrees.
  • Combine the mustard, olive oil, minced garlic, and thyme leaves together into a paste. Rub all over the roast evenly. Season all sides of the roast with sea salt and freshly cracked pepper, to taste.
  • Place the meat thermometer into the thickest part of the roast. Place the Dutch oven into the preheated oven and cook until the thermometer reads 115 degrees, about 60-75 minutes (depending on your roast size). Crank the heat up to 500 degrees and continue cooking until the roast reaches 125-130 degrees, for medium rare. Remove from the oven and let the roast rest on a cutting board for at least 10 minutes before slicing and serving. Enjoy.