Fragrant herbs and garlic season the Top Sirloin and vegetables as they slow roast in the oven. The sun-dried tomato sauce adds that finishing touch for a taste of the Mediterranean. Use a meat thermometer to cook your roast to the doneness that you like the best – without overcooking it! NOTE: ‘Time-to-cook’ figures are rough guidelines only as cook time is dependent on so many factors such as: oven and thermometer accuracy, starting temperature of roast, roast shape and cut. A good thermometer is one of your best kitchen investments.