How to Cook Sirloin Tip Roast?

To cook sirloin tip roast. First you put the roast in a roasting pan, then you pre-heat oven at 500 degrees. You cook the roast at 500 degrees for 5 minutes for every pound of your roast. Just turn your oven off and let your roast sit in the oven until oven has cooled off. Then take out the roast and slice.