Rub salt and pepper all over the roast.
Cook in 200* oven until 5* below desired temp. 125-130* is medium rare. For 5 pounds, this may be 3 hours. Don't go above 200*!!
At 5* below desired temp, remove roast and cover lightly with foil. Roast will still cook and temp will come up to desired temp.
Crank oven to 550* or as high as it will go. Allow roast to rest for 30-60 minutes while oven warms. Put roast back in 550* oven for 8-10 minutes. This crisps the outside, but doesn't cook the inside anymore. You can do this anytime between the 30-60 minutes to fit your serving needs.
remove, behold the beauty, slice and serve. It should stay uniformly medium rare throughout, but be nice and crispy just on the very edge. You can quickly pan fry if any guests want to ruin their slice by having it cooked medium or well done .
ive done it this way a few times and it turns out great. Use a meat thermometer to track temp, just make sure it isn't touching a bone.
good luck!
Do we need a photo?
Ask and you shall receive. My only complaint was that I ended up cooking it to a medium instead of medium-rare on accident.
View attachment 531756