Important Tips before You Begin: Leave time to bring the roast to room temperature before you start. Buy a meat thermometer (digital is best). This cheap investment will be a kitchen life saver. Buy a roasting pan with a wire rack. Baking the roast directly on a metal or glass pan will cause it to cook unevenly and possibly ruin your dinner. Plan time to let the roast rest for 15 minutes after cooking. This lets the juice settle. Remember that oven temperatures are not always accurate. The key to success is frequent checking and setting a timer.