Step 1: Prepare the Prime Rib
Remove the roast from the refrigerator about 2 hours before cooking so it can come to room temperature.
Step 2: Season
Mix the olive oil, garlic, rosemary, thyme, onion powder, salt, and pepper. Rub the mixture all over the roast.
Step 3: Preheat the Oven
Preheat your oven to 450°F (230°C).
Step 4: Roast
Place the roast on a rack in a roasting pan, fat side up.
Roast for 20 minutes to create a flavorful crust.
Step 5: Lower the Temperature
Reduce the oven to 325°F (163°C) and continue roasting until the internal temperature reaches:
- 120–125°F for rare
- 130–135°F for medium-rare
- 140°F for medium
Step 6: Rest the Meat
Remove the roast from the oven, tent loosely with foil, and let it rest for 20 minutes before slicing.
Make the Mashed Potatoes
Step 7: Cook the Potatoes
Boil the potatoes in salted water for 15–20 minutes until fork tender.
Step 8: Mash
Drain well, then mash with butter and warm milk until smooth. Season with salt and pepper.
Make the Gravy
Step 9: Prepare the Sauce
Melt the butter in a saucepan. Whisk in the flour and cook for 1 minute. Gradually whisk in the beef drippings or broth until smooth. Simmer until thickened, then season to taste.
Make the Creamed Spinach
Step 10: Cook the Spinach
Melt the butter in a skillet over medium heat. Sauté the garlic for 30 seconds, then add the spinach and cook until wilted.
Step 11: Finish the Sauce
Stir in the heavy cream and Parmesan cheese. Cook for 2–3 minutes until creamy. Season with salt and pepper.
Step 12: Serve
Slice the rested prime rib and serve with:
- Creamy mashed potatoes topped with beef gravy
- Creamed spinach
- Extra gravy on the side
- Dinner rolls or roasted vegetables, if desired
Tips
- Always use a meat thermometer for the best results.
- Let the roast rest before slicing to keep it juicy.
- Slice against the grain for the most tender bites.
- Store leftovers in the refrigerator for up to 4 days and reheat gently to avoid overcooking.
Enjoy this classic steakhouse-style prime rib dinner that’s tender, flavorful, and perfect for any special occasion! 🥩🍽️
