how long to cook a 10 lb. prime rib on a traeger
4. Preheat traeger to 300, cook prime rib, fat side up for 1 hour. 5. Turn traeger to smoke and cook 2-2 1/2 hours. 6. Turn back up to 300 for 10 mins, 400 for 10 mins, 300 til done. Pull it off at 125 degrees. 7. Take salt of before resting.