Roast beef is a whole cut of beef seasoned simply, browned in a hot oven, then roasted until it reaches your preferred doneness and sliced across the grain. This straightforward method uses a boneless top sirloin roast, garlic, herbs, and a thermometer for dependable results; serve it hot for dinner or chilled in sandwiches.
Ingredients
- 1 boneless top sirloin roast, 3 lb (1.36 kg), tied if uneven in shape
- 1 tbsp (15 ml) olive oil
- 1½ tsp (9 g) kosher salt
- 1 tsp (2 g) freshly ground black pepper
- 2 tsp (6 g) garlic powder
- 1 tsp (1 g) dried thyme, or 1 tbsp (3 g) fresh thyme leaves
- 1 tsp (1 g) dried rosemary, crushed, or 1 tbsp (2 g) finely chopped fresh rosemary
- 1 medium yellow onion, cut into wedges, about 1 cup (150 g)
- 1 cup (240 ml) low-sodium beef broth or water, for the roasting pan
Instructions
- Take the chill off and prepare the oven. Remove the roast from the refrigerator 30 minutes before cooking, leaving it on a tray and no longer than 2 hours at room temperature. Heat the oven to 450°F (232°C). Pat the beef dry with paper towels; dry surfaces brown more effectively.
- Season the roast. Stir together the salt, pepper, garlic powder, thyme, and rosemary. Rub the roast all over with olive oil, then press the seasoning mixture onto every side. Set the onion wedges in a roasting pan and place the beef on a rack above them, fat side up if there is a fat cap. Pour the broth into the pan beneath the rack, not over the meat.
- Brown, then lower the heat. Roast at 450°F (232°C) for 15 minutes. Without opening the oven for long, lower the temperature to 325°F (163°C) and continue roasting. The initial blast encourages browning; the gentler heat helps the center cook more evenly.
- Check the temperature. Begin checking after about 55 minutes at 325°F (163°C), then check every 10–15 minutes. Insert an instant-read thermometer into the thickest part of the roast, avoiding the pan, fat, and any bone. Cooking time varies with the roast’s shape and starting temperature. For a whole cut of beef, USDA FSIS lists 145°F (63°C) followed by a 3-minute rest as the safe minimum. For a pinker roast, some cooks choose to remove it at 125–130°F (52–54°C), understanding that this is below the USDA safe minimum; serve such beef only to people who accept that food-safety risk. Do not rely on color alone to judge doneness.
- Rest before carving. Transfer the roast to a clean cutting board, loosely tent it with foil, and rest for at least 15 minutes. If it has not already reached the USDA safe minimum, allow it to continue cooking during the rest and confirm 145°F (63°C) with the thermometer, followed by a 3-minute rest at that temperature. Resting also lets the juices settle. Carve thinly across the grain and serve with the onions and pan juices.
Tips
- Use a thermometer, not a clock. A narrow, long roast cooks faster than a compact one of the same weight, and ovens vary. Take readings in more than one spot if the roast is irregular.
- Choose a suitable cut. Top sirloin is lean and easy to carve. A boneless rib roast also works and is richer; chuck is generally better suited to slow braising because it can be chewy when roasted quickly.
- Adjust the seasoning. If using fine table salt instead of kosher salt, use about 1 teaspoon (6 g) rather than 1½ teaspoons, since the crystals pack more densely. Fresh herbs can replace dried herbs; use roughly three times as much by volume.
- Save the pan juices. If the pan is dry, add a splash of broth before roasting finishes. Strain the juices and spoon off excess fat; the simple drippings are savory but are not a thick gravy.
Serving Suggestions
Serve slices with roasted potatoes, mashed potatoes, Yorkshire pudding, or crusty bread to catch the juices. Green beans, glazed carrots, or a crisp salad balance the rich beef. For a quick pan sauce, pour off excess fat, set the roasting pan over medium heat if it is stovetop-safe, and stir in a little broth while scraping up browned bits. Simmer briefly, taste, and season as needed.
Variations
For a mustard-herb crust, replace the olive oil with 1 tablespoon (15 g) Dijon mustard before adding the herbs. For a peppery crust, increase the black pepper to 1½ teaspoons (3 g) and add 1 teaspoon (2 g) smoked paprika. You can also use a tied boneless rib roast with the same seasoning and temperature method, but expect a different cooking time; use the thermometer rather than assuming the sirloin timing applies.
Storage and Reheating
Refrigerate leftover beef within 2 hours of cooking, in a shallow airtight container. It keeps for 3–4 days in the refrigerator. Freeze tightly wrapped portions for best quality for about 2–3 months; thaw in the refrigerator. Reheat only the portions you plan to eat, covered with a spoonful of broth or pan juices, until they reach 165°F (74°C), the USDA FSIS safe temperature for leftovers. Thin slices can also be served cold in sandwiches if they have been handled and stored safely.
Frequently Asked Questions
How long does a 3-pound roast beef take?
In this recipe, allow roughly 55–70 minutes at 325°F (163°C) after the initial 15-minute browning stage, but the exact time depends on thickness, oven accuracy, and starting temperature. Begin checking early and let the thermometer determine when it is done.
Should I cover roast beef while it cooks?
No. Roast it uncovered so the surface can brown. Tent it loosely with foil only after it comes out of the oven; wrapping it tightly during roasting would trap steam and soften the exterior.
Why is my roast beef tough?
It may have been cooked too long, cut with the grain, or made from a cut better suited to braising. Slice thinly across the visible muscle fibers, and choose sirloin or rib roast for this oven-roasting method.
Can I cook the roast straight from the refrigerator?
Yes, but it may take longer and cook less evenly. The brief 30-minute tempering period in this recipe helps reduce the chill; do not leave raw beef at room temperature for more than 2 hours.
Do I need a roasting rack?
A rack promotes airflow and keeps the roast from sitting in its juices. If you do not have one, arrange thick onion wedges in the pan and rest the beef on top; the onions serve as a makeshift rack and flavor the drippings.
Can I make gravy from the drippings?
Yes. After removing the roast, spoon off excess fat, whisk about 1 tablespoon (8 g) flour into the drippings over medium heat, then gradually whisk in 1 cup (240 ml) broth. Simmer, stirring, until thickened, and season to taste.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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