For a bone in prime rib figure two servings per rib while a boneless roast will yield two servings per pound.
Standing rib roast oven rack.
When trying to figure out how much time you need to roast your prime rib use this simple calculation.
Rub the seasoning onto the roast.
Rub the roast all over with olive oil and the house seasoning.
Allow roast to stand at room temperature for at least 1 hour.
Using kitchen twine tie the roast parallel to the rib bones at each end and between each pair of ribs.
With a meat thermometer take a reading in the center of the meat after 10 to 12 minutes and remove the meat or let it cook longer to your taste.
Place oven rack to middle position preheat oven to 500ºf a half an hour before beginning to cook roast.
Preheat the oven to 375 degrees f 190 degrees c.
Weight of the prime rib x 5 total roasting time in minutes for example if you have a 3 pound roast 3 5 15 minutes.
Reduce heat to 325ºf.
If oven does not go to 500ºf just go as high as possible transfer ribeye roast to roasting pan fitted with a greased rack fat side up.
Roast at 500ºf for 15 minutes.
Place a roasting rack in a large roasting pan.
Preheat the oven to 200 degrees f 93 33 c.
For the best result let the standing rib roast sit on the counter for 30 minutes up to 2 hours to come to room temperature.
Combine the salt pepper and garlic powder in a small cup.
Lay roast on the work surface with the rib rack facing down.
Place roast on a rack in a pan with the rib side down and the fatty side up.
Reduce the oven temperature to 350 f and roast for 16 minutes per pound about 1 3 4 hours or until a meat thermometer reaches an internal.
Preheat oven to 375 f.
Click for kitchen twine.
Rub roast all over with the house seasoning.
On one side of the roast locate the main muscle which should have a c shaped curve of fat hugging it.
Arrange the rack bone side down in the skillet.
Let the roast stand at room temperature for at least an hour.
Roast the lamb in preheated oven for 12 to 18 minutes depending on the degree of doneness you want.
Place on the roasting rack with rib side down and the fatty side up.
Place the roast on a rack in a roasting pan so that the fatty side is up and the rib side is on the bottom.
For my 2 1 2 pound roast an additional 45 minutes for 130 55 minutes for 140 and 60 minutes for 145.