Top Sirloin Roast Beef Recipe (Reverse Sear)

🥩 Top sirloin

Top sirloin is a tender, flavorful cut, and it costs a lot less than a rib roast. For this recipe, pick a roast of about 3 pounds with a fairly even shape from one end to the other, so it cooks the same way all over. With a slow cook like this one, it gets as tender as a much more expensive piece. It’s the cut I’m going back to every time, holidays included.

🌡️ The thermometer decides, not the timer

With this method, a probe thermometer is a must. Pull the roast at 115°F, then aim for 125 to 130°F after the crust: that’s how I like it, and it’s amazing. As a guide, count about 35 to 40 minutes per pound at 250°F, but every roast is different. Always trust the temperature in the center, never just the clock. A thermometer that stays in the roast with a cable is the easiest, since you never have to open the oven.

🔥 Why the reverse sear

Usually, you sear a roast over high heat, then finish it more gently. Here it’s the opposite: it cooks slowly at 250°F, then gets a blast of heat at 500°F at the end. The gentle heat cooks the meat evenly from the edge to the center, and the big heat at the end just builds the crust. That’s why the slices are pink edge to edge, with no dry gray ring on the outside.

⚠️ A hot oven before the roast goes back in

Take the roast out of the oven before you raise the temperature, and let the oven heat to 500°F while it rests. If the roast stays inside while the oven climbs, the crust doesn’t have time to brown, and the meat keeps cooking for nothing. The oven has to be fully hot when the roast goes back in. Those 10 minutes should only build the crust. The rest time is exactly what the oven needs to get there.

🥕 The roasting pan vegetables

At 250°F, the vegetables would never cook through, which is why they go in 30 minutes early at 400°F. The beef broth keeps them from drying out and flavors them for the whole time the roast cooks. At the end, there’s a good jus left to spoon over the meat on the plate. Cut the carrots and celery in big chunks, or they’ll get too soft. And don’t skimp on them: they disappear fast at the table.

🧊 Dry it in the fridge the day before

If you have time, pat the roast dry and leave it uncovered on a rack in the fridge for 12 to 24 hours. The surface dries out, and dry meat makes a much better crust when it hits the hot oven. No need to salt it: the salted herbs in the mustard paste bring all the salt it needs. It’s not required, but it’s worth it, and it takes you thirty seconds the night before.

🔪 How to slice the roast

Look at which way the meat fibers run, and slice across them. That cuts the fibers short, and every slice gets much more tender to eat. Cut thin slices with a sharp knife, on a board with a groove to catch the juices. Only slice what you’re serving, the rest keeps better in one piece and stays juicier for the leftovers.

⚖️ How much roast per person?

I count about 200 g of raw roast per person. A 3-pound roast gives you 6 good servings, with the vegetables. If you’re feeding big eaters, or you want leftovers, get a slightly bigger roast and adjust the time with the thermometer. Me, I’m always happy when there’s some left, because the leftovers are half the fun.

🍽️ What to serve it with

The roasting pan vegetables are already there, with their juices. For the rest, mashed potatoes are the classic, and my aligot with this roast is unreal. For something fresher, my white balsamic arugula salad is perfect on the side. The peppery arugula goes great with the beef, and the white balsamic keeps it light next to a rich plate.

🥪 Leftovers

Leftover pink roast like this one is a real reward. Reheat the slices quickly in a very hot pan or in the air fryer, just to sear them, without cooking them again. Put them in a grilled cheese, in my deluxe roast beef sandwich or in a cold salad. It’s unbelievable. Cold, sliced thin, it’s just as good on a salad the next day.

❄️ Storage

Cooked roast keeps 3 to 5 days in the fridge, in an airtight container. It freezes really well, especially when it’s pink: wrap it tight and freeze it in one piece. Thaw it slowly in the fridge, then sear it lightly on one side in a very hot pan. It’ll still be amazing. Avoid the microwave, it cooks the meat right through and you lose all that pink.

📅 Make-ahead prep

The day before, set the roast to dry in the fridge, cut the onion, carrots and celery, and store them in a labeled container. Make the mustard, garlic and herb paste too, and keep it in the fridge. On the day, you take out the roast, put the vegetables in the oven and brush on the paste: that’s it. The roast cooks slowly while your people arrive, and the whole house smells like Sunday dinner. You’re at the table with them instead of stuck at the stove.

✅ What to serve with my top sirloin roast beef recipe

Serve it with my aligot or my Boursin garlic and herb mashed potatoes, and my white balsamic arugula salad. With the leftovers, make my deluxe roast beef sandwich. Put the roasting pan vegetables in a big dish right in the middle of the table, with their jus on the side, and let everyone help themselves.