Smoked Top Sirloin Steak with Garlic-Herb Compound Butter

For top sirloin that stays juicy on a pellet grill, I start with an overnight dry brine so the seasoning works its way into the meat before it ever hits the heat. Then I smoke it low at 225°F, which helps the steak cook more evenly and keeps the interior from racing ahead while the outside catches up. After that, I finish with a short, hot reverse sear to build a deep crust without overcooking the centre, so you still get that pink, tender middle when you slice in. I cooked this on a Pit Boss with a 1.5-2 inch steak, so the timing and temperature are geared toward what a home pellet grill can actually do, not a fiddly method that sounds better on paper than it works in real life.

Top sirloin is one of the leaner cuts you can put on a smoker, which means it has less margin for error than a fattier ribeye or chuck roast - overcook it by 10 degrees and it goes from tender to chewy in a way that fat cannot rescue. The reverse-sear method solves that by separating the two jobs of cooking a steak: the smoker handles the interior, and the grill handles the crust. I smoke these at 225°F until the center reaches 100°F, which gives the muscle fibers time to relax and lets the oak or cherry smoke penetrate evenly before any searing heat ever touches the surface. By the time the steak hits the screaming-hot grates, the interior is already close to medium-rare and the sear only needs a few minutes to build the crust - which means there is almost no window to overshoot.

The overnight dry brine is the other half of what makes this work, and it is not optional for a lean cut like sirloin. Salt draws moisture to the surface, where it dissolves and is then pulled back into the muscle over several hours, seasoning the steak from the inside out rather than just on the exterior. The second thing it does is dry out the surface completely, and a dry surface browns in seconds over high heat - a wet surface steams before it ever sears. I have cooked these steaks both ways, with and without the brine, and the difference in crust thickness and depth of browning is significant enough that I would not skip it. The garlic-herb compound butter that goes on during the rest is the finishing touch - the milk solids in the butter brown quickly on the hot steak and the rosemary and thyme release their oils as it melts, adding a layer of flavor on top of the crust that pulls everything together.

Why Reverse-Sear Smoked Top Sirloin Works

Why Lean Sirloin Needs Low-and-Slow Before High Heat

Sirloin doesn't have the same fat cushion as ribeye or strip, so sudden high heat pushes the exterior past done before the center has a chance to catch up. Starting at 225°F lets the internal temperature climb gradually and gives smoke time to work its way in without tightening the meat. When the steak finally sees high heat, it's already close to medium-rare inside, so the sear is about crust, not cooking it through.

How the Overnight Dry Brine Changes Browning and Flavor

The dry brine does two things at once: it seasons the steak all the way through and it dries the surface. Salt on the outside pulls moisture up, dissolves, and then moves back into the meat over several hours, so the interior tastes properly seasoned instead of bland. At the same time, the surface dries out in the fridge, and a dry surface browns fast and evenly when it hits hot grates. I've cooked sirloin with and without a dry brine, and the brined version consistently has a thicker, better-tasting crust. If you're deciding whether top sirloin is the right cut for your budget or your occasion, 6 Cheap Beef Cuts That Taste Better Than Ribeye breaks down where sirloin sits relative to other affordable options worth knowing about.

Best Steak Cuts and Thickness for Reverse Sear

Reverse sear works best on steaks thick enough to spend time in the smoker without overcooking. For this method, thickness matters more than the exact weight or the name of the cut. If you give the low-and-slow phase room to do its job, the high-heat finish can be short and controlled.

Ideal Thickness for Smoked Top Sirloin Steaks

For smoked top sirloin, I aim for steaks between 1 ½ and 2 inches thick. That gives enough time at 225°F for smoke to penetrate and for the center to warm gradually without racing past your target. Thinner steaks rush through the smoke stage and are much harder to keep at medium-rare once you start searing. If my steaks aren't perfectly even, I treat the thinnest one as the "timer" and check all of them off that internal temperature.

Using Strip or Ribeye with the Same Method

Strip and ribeye both take well to the same reverse-sear approach, they just behave a little differently because of the extra fat. The smoke phase is identical: low heat, gentle climb in temperature, then a hot finish. The difference is that ribeye and strip are slightly more forgiving if you overdo the sear, since the fat keeps them juicy longer. When I swap sirloin for strip or ribeye, I keep the smoke-to-sear pattern the same and mainly adjust the final pull temperature based on how done I want them, knowing I have more wiggle room than I do with a lean sirloin.

Wood, Pellet Grill Setup, and Pit Boss 700FB2 Notes

Pellet grills make reverse-sear smoked sirloin more approachable because they hold 225°F with very little effort, but the details still matter. I run my Pit Boss 700FB2 at a true 225°F for the smoke phase and give it plenty of time to stabilize before the steaks go on. Thin, clean smoke is the goal here-if the smoke looks thick and white, I wait for it to settle before putting the meat on. When it's time to sear, I take the preheat just as seriously and let the grill sit at max temp long enough that the grates feel properly fierce when I lay the steaks down.

Interested in learning more about pellet grills? Here's Why the Pellet Smoker Gives You the Most Hands-Off BBQ Experience.

Oak vs Cherry Wood for Smoked Sirloin

For sirloin, I prefer wood that supports the beef flavor instead of drowning it out. Oak gives a medium-bodied smoke that feels classic on steak-noticeable, but not so strong that it hides the taste of the meat. Cherry is softer and slightly sweeter, and it adds a deeper mahogany color to the exterior, which looks great once the crust forms. I always go for oak when I want that traditional steakhouse profile, and cherry when I'm after a milder smoke and a darker, more polished crust. Both work; it's mainly a matter of how assertive you want the smoke to be. Here's more on various types of wood in Wood Guide For Smoking Meat

What to Do When Your Pellet Grill Won't Get Hot Enough

Not every pellet grill will hit the kind of searing temperatures you see in steakhouse kitchens, and I've run into that with my own setup. If the grill stalls in the low 400s, I treat the smoke phase the same and simply move the sear to a ripping-hot cast iron skillet on a gas burner. The steaks come off the smoker at 100°F internal, go into a thin layer of oil in the skillet, and get flipped often while I watch the temperature closely. It's the same reverse-sear logic, just using the hottest tool I have. The important thing is that the high-heat step stays short and focused on crust, not cooking the steak all the way through.

Garlic-Herb Compound Butter for Steak

The garlic-herb compound butter is more than a garnish-it finishes the steak in a way that pulls the smoke and crust together. I mix softened butter with fresh rosemary, thyme, garlic, salt, and pepper, then chill it in a log so it's easy to slice. A round goes on each steak as soon as it leaves the grill, and it slowly melts over the crust while the meat rests. By the time I'm ready to slice, the butter has turned into a seasoned glaze that clings to the surface and runs into the sliced edges.

Why Butter and Fresh Herbs Belong on Smoked Beef

Butter works so well on smoked beef because it brings both fat and milk solids to the party. The fat smooths out any rough edges in the smoke flavor, and the milk solids brown quickly on the hot crust, adding a nutty note on top of the char. Fresh herbs handle the heat better than dried ones here-they release their oils as the butter melts and bring a bright, green flavor that cuts through the richness. I've tried skipping the butter and just serving the steak plain, and the difference in depth and finish is noticeable enough that I now treat the butter as part of the recipe, not a luxury. If you are interested in learning more about butter and beef, here's How Do You Sear and Baste a Steak Without Burning the Butter?

Simple Variations Like Cowboy Butter or Chimichurri

Once you're happy with the base method, the butter is an easy place to play. A cowboy butter version swaps in Dijon, lemon juice, chives, and a pinch of chili flakes for a sharper, more lively finish that wakes up the smoke and char. Chimichurri takes it in a different direction-parsley, garlic, vinegar, and olive oil spooned over the sliced steak instead of butter. I use the same reverse-sear smoked sirloin and simply change what goes on top, which lets me keep the core technique while making the plate feel completely different.

Step-by-Step: Reverse-Sear Smoked Top Sirloin Steaks

1. Overnight Dry Brine

The dry brine is what turns a plain sirloin into a steak that tastes seasoned all the way through. When you salt the steaks and leave them uncovered in the fridge overnight, the salt first pulls moisture to the surface, then dissolves and slowly moves back into the meat. That's why the surface looks dry and slightly tacky when you take them out-most of the free moisture has already evaporated. I don't skip this step with lean cuts; it makes the crust brown faster and gives the interior more flavor.

2. Smoke at 225°F to 100°F Internal

The smoke phase handles two jobs: it sets up the interior and builds a gentle layer of smoke flavor without tightening the meat. Holding the grill at 225°F and letting the steaks climb slowly to around 100°F internal gives the muscle fibers time to relax instead of seizing under sudden high heat. It also gives oak or cherry smoke enough time to work its way into the outer layer of the steak. I treat this as the "relax and flavor" stage-once the internal hits 100°F, the steak is primed for a quick, aggressive sear.

3. Crank Heat and Reverse Sear to 125°F

After the low-and-slow part, the job shifts to building a crust without blowing past medium-rare. I crank the grill or move to the hottest tool I have and let it fully preheat so the grates feel brutally hot. The steaks go right over that high heat and get flipped regularly, with the focus on color and texture rather than time. Because the interior is already near target, the sear is short and controlled-just enough to put on a thick, browned crust while nudging the center up to about 125°F.

4. Rest with Compound Butter and Slice

The rest is where the steak settles and the butter does its work. As the steak sits under a loose foil tent, the heat redistributes and the juices move back through the meat instead of rushing out onto the board. A slice of garlic-herb compound butter on top melts slowly over the crust, adding richness, browned milk solids, and fresh herb flavor that seeps into the sliced edges. I always wait the full rest before cutting against the grain; it's the difference between a steak that looks juicy and one that actually eats that way.

Troubleshooting and Doneness Options

What to Do If Your Steaks Are Thinner Than 1 Inch

Reverse sear works best on thicker steaks, but you can still use the same idea on thinner sirloin with a few tweaks. If my steaks are under 1 inch, I shorten or skip the smoke phase and treat it more like a gentle preheat: a brief time at 225°F just to pick up a hint of smoke, then a fast sear. The main goal is avoiding overcooking the center while you chase crust. I rely more on an instant-read thermometer and pull the steaks earlier in the sear, knowing they'll carry over a few degrees as they rest.

Adjusting for Medium and Medium-Well Sirloin

Not everyone wants medium-rare, and sirloin can still be good a little more done if you're careful. When I'm cooking for people who prefer medium, I simply let the sear phase run until the internal temperature hits around 130°F, then give the steaks their full rest. For medium-well, I go closer to 140°F, but I accept that sirloin at that point will be noticeably less juicy because of how lean it is. The big rule is the same: decide your target temperature first, then treat it as the signal to pull the steak, not the color on the outside.

Storage, Reheating, and Freezing Smoked Sirloin

Fridge Storage and Gentle Reheating

Smoked sirloin keeps well for a few days if you store it properly. I slice the steak, let it cool, then move it into an airtight container and refrigerate for up to three days. For reheating, I go low and slow to protect the texture-either a covered skillet over medium-low heat with a splash of broth or water, or a 275°F oven with the slices covered in foil. The idea is to warm the meat through without trying to recreate a hard sear; chasing high heat again usually just tightens it and dries it out.

Freezer Tips and Best Texture Window

Freezing works fine as long as you treat it as a short-term solution. I put cooled slices in a zip-top freezer bag, press out as much air as I can, and freeze for up to two months, though I prefer to use them within the first month for the best texture. When I'm ready to use them, I thaw overnight in the fridge and reheat gently using the same skillet or low-oven approach. At that point, I'm more likely to use the steak in tacos, quesadillas, or salads, where any minor change in texture is less noticeable than it would be on a plate of plain slices.

Repurposing Leftovers: Tacos, Quesadillas, Salads

Leftover smoked sirloin is one of those things I'm happy to have in the fridge because it turns into fast meals with very little effort. The smoke and crust are already doing most of the work, so the goal with these ideas is just to add texture, freshness, and a bit of contrast around the meat instead of trying to turn it back into "steak night." If you want a full recipe built around grilled steak and fresh produce rather than a loose leftover idea, Grilled Steak Salad with Corn, Avocado, and Red Wine Vinaigrette is worth bookmarking alongside this one.

Smoked Sirloin Steak Tacos

For tacos, I slice the sirloin thin across the grain and warm it gently in a skillet with a splash of broth or water so it doesn't dry out. Warm a stack of corn or flour tortillas, pile in the steak, then add toppings like pickled red onion, crumbled cotija, and a squeeze of lime. If I have salsa or guacamole on hand, a spoonful on top finishes the tacos without much extra work.

Steak Quesadillas and Breakfast Scrambles

Quesadillas are more about crunch and cheese than anything else. I chop the leftover steak into small pieces, scatter it over one tortilla with shredded cheese, top with another tortilla, and cook in a dry skillet until the outside is crisp and the cheese has melted. For breakfast scrambles, I dice the steak and fold it into softly scrambled eggs with sautéed peppers and onions. Both dishes use the sirloin more like a flavorful add-in, which makes any slight change in texture from reheating much less noticeable.

Smoked Steak Salad for Weeknight Dinners

When I want something lighter, I keep the slices on the thicker side and lay them over a bed of greens like arugula or mixed lettuce. Cherry tomatoes, shaved parmesan, and thinly sliced red onion make a simple base, and I finish it with a bright vinaigrette so the smoke and beefiness don't feel heavy. It still eats like a proper dinner, but the plate feels different enough from the original steak that it doesn't feel like leftovers.

Frequently Asked Questions

Do I have to use top sirloin, or will this work with other steaks?

You don't have to use top sirloin, but that's the cut this method is built around. Sirloin is lean and can turn chewy fast, so the low-and-slow smoke plus short, fierce sear are calibrated to protect it. Strip and ribeye work very well with the same approach and are actually more forgiving, but if you follow the timings and pull temperatures here, sirloin is where you'll notice the biggest improvement.

Can I skip the overnight dry brine if I'm short on time?

You can shorten it, but I wouldn't skip it entirely. Even a few hours in the fridge after salting will start to draw moisture to the surface, dissolve the salt, and pull it back into the meat. The longer rest just gives you more even seasoning and a drier surface for better browning. If I'm pressed for time, I still try to give the steaks at least 2-3 hours; I've cooked both ways and the brined version wins every time.

What if my pellet grill doesn't hold a perfect 225°F?

Most pellet grills wander a bit around the set temperature, and that's fine. If yours drifts between roughly 215°F and 240°F, the method still works; you may just see the internal temperature rise a little faster or slower. I watch the steak's internal temperature more than the display and treat 100°F as my signal to move into the sear, regardless of small swings on the grill. If the grill runs consistently hotter, you can start checking a bit earlier.

How do I keep from overshooting my target temperature during the sear?

The key is using an instant-read thermometer and thinking in terms of pull temperature instead of time. Once the steaks go over high heat, I check them regularly and aim to pull sirloin around 125°F for medium-rare, knowing it will climb a few degrees as it rests. If I'm cooking for people who want medium, I aim for 130°F. I don't wait for a certain number of minutes; I let the thermometer tell me when the crust has done its job and the center is where I want it.

More Meat Smoker Recipes You'll Enjoy

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Two-Stage Beer Can Smoked Chicken

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More Steak Recipes You'll Love

• How to Cook Sirloin Steak (Pan-Seared, Juicy Every Time) - If you want the same cut with a faster weeknight method, this pan-seared sirloin delivers a deeply browned crust without a smoker or grill.
• Grilled Steak Salad with Corn, Avocado, and Red Wine Vinaigrette - A natural landing spot for leftover reverse-sear sirloin, with charred corn, creamy avocado, and a sharp vinaigrette that cuts through the beef.
• Peppercorn Steak (Steak Au Poivre Without Cognac) - A bold, pan-sauce-forward steak recipe that leans into the same cracked pepper note that makes reverse-sear sirloin bark so good.
• The Best Garlic Butter Steak Bites in Rich Herb Butter Sauce - A fast, saucy use for sirloin that plays on the same garlic-herb butter combination in this recipe, just done in a skillet in under 15 minutes.