Preheat oven to 350 degrees Fahrenheit. Season your roast with salt, pepper, and garlic powder before cooking. Place your roast onto a baking sheet and bake for 25-30 minutes, or until cooked through. Let cool slightly before serving. Enjoy! How do you cook sirloin so it’s tender?
Next, place the roast in the preheated 450 degree F oven. Cook for about 20 minutes at that heat, then lower the heat to 325 degrees F, without opening the door. Then, cook the roast until the meat thermometer inserted reaches about 140 degrees F. This should take approximately 2 ½ to 3 hours. This will vary depending on the size of your roast.
There are many factors to consider when cooking a steak, including the temperature at which it was cooked. When cooking a sirloin roast, you should use an oven with a temperature of 375 degrees Fahrenheit or higher to avoid the risk of it being too rare or too well done.
Then, season the meat on all sides. Place the roast with the fat side up on a roasting pan with a rack. You don't want the roast touching the bottom of the pan. Next, place the roast in the preheated 450 degree F oven. Cook for about 20 minutes at that heat, then lower the heat to 325 degrees F, without opening the door.