Irish Roast Beef with Guinness au Jus

Irish Roast Beef with Guinness au Jus

This Irish roast is marinated in Guinness stout, slathered with garlic and herbs, and cooked low and slow in the oven, resulting in tender, robustly flavored beef.

Preparation Time
20 mins
Cooking Time
3 hr 15 mins
Total Time
3 hr 35 mins
Calories
369 Calories

Recipe Instructions

Step 1
Place roast in a roasting pan and pour stout over top. Cover the pan with plastic wrap and marinate in the refrigerator, 8 hours to overnight, turning once.
Step 2
When ready to cook, preheat the oven to 250 degrees F (120 degrees C).
Step 3
Transfer roast to a cutting board and pat dry. Leave stout in the baking pan.
Step 4
Heat olive oil in a large skillet over medium-high heat. Sear roast for 2 to 3 minutes per side; transfer to a plate.
Step 5
Crush rosemary, thyme, steak seasoning, and pepper with a mortar and pestle. Add minced garlic and stir to make a paste. Spread paste over all sides of roast. Place roast back into the roasting pan with stout, and cover loosely with foil.
Step 6
Bake in the preheated oven for 2 hours. Add potatoes to the roasting pan and remove the foil. Continue to bake until an instant-read thermometer measures 145 degrees F (65 degrees C) for medium, about 1 more hour, or to desired degree of doneness. Remove from the oven, cover with a doubled sheet of aluminum foil, and allow to rest in a warm area for 20 minutes before slicing.
Step 7
While the roast is resting, pour pan juices into a pot. Bring to a boil over medium heat, then reduce the heat and simmer until juices have reduced and thickened, about 10 minutes. Season to taste with salt and pepper. Strain and serve with beef and potatoes.

Ingredients

  • 1 tablespoon olive oil
  • salt and ground black pepper to taste
  • 4 cloves garlic, minced
  • 1 (2 pound) boneless beef chuck roast
  • 1 (12 fluid ounce) can or bottle Irish stout beer (e.g. Guinness®)
  • 1 pound small round red potatoes
  • 0.5 teaspoon ground black pepper
  • 0.5 teaspoon dried rosemary
  • 0.5 teaspoon ground thyme
  • 0.5 teaspoon steak seasoning

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