Prime Rib Recipe
Sautéed mushrooms, caramelized onions, fontina cheese, horseradish sauce, toasted Cuban roll. Served with natural au jus.
Was this page helpful?
Help improve this recipe for others.
Send this recipe to your inbox.
We'll email it straight to you - plus weekly cooking inspiration.
Ingredients
Some product links may be affiliates. If you buy through them, you're supporting the site and Pekin may earn a commission at no extra cost to you.
Prime Rib
Sautéed Mushrooms
Caramelized Onions
Assembly
Method
Preparing the Prime Rib
- 1
Season the Prime Rib
Preheat your oven to 450°F (232°C). Mix together salt, black pepper, and garlic powder in a small bowl. Rub the prime rib roast with olive oil and then coat it evenly with the seasoning mixture.
- 2
Roast the Prime Rib
Place the seasoned prime rib in a roasting pan, fat side up. Roast in the preheated oven for 20 minutes, then reduce the temperature to 325°F (163°C) and continue roasting for about 1.5 to 2 hours or until the internal temperature reaches 130°F (54°C) for medium-rare. Remove from the oven and let rest for at least 20 minutes before slicing.
Sautéing the Mushrooms
- 3
Caramelizing the Onions
- 4
Caramelize the Onions
In a separate skillet, melt butter over medium-low heat. Add the sliced onions and cook slowly, stirring occasionally, until they are golden brown and caramelized, about 20-25 minutes. Stir in brown sugar and balsamic vinegar, cooking for another 2-3 minutes. Remove from heat.
Assembly
- 5
Assemble the Sandwiches
Slice the toasted Cuban rolls in half. Layer the sliced prime rib, sautéed mushrooms, caramelized onions, and fontina cheese on the bottom half of each roll. Add horseradish sauce to taste, then close the sandwich with the top half of the roll.
- 6
Prepare the Au Jus
In a small saucepan, heat the beef broth over medium heat until warmed through. Serve alongside the sandwiches for dipping.
