Steak night usually means a reservation, a wait, and a bill that stings. These garlic butter steak bites skip all of that. Bite-size sirloin cubes sear hot and fast until deeply browned, par-cooked baby potatoes crisp up golden in the same skillet, and everything gets tossed in foaming garlic butter with a shower of parsley. Twenty-five minutes, one pan, and it eats like the steakhouse came to you.
Why you’ll love it
- Steakhouse flavor, weeknight effort. A screaming-hot skillet and real butter do all the heavy lifting.
- ~36g protein per serving (estimated), from generous sirloin — genuinely filling without a side project.
- One pan. Potatoes crisp, steak sears, garlic butter finishes — all in the same skillet.
- Date-night energy, Tuesday timeline. Fancy enough to impress, fast enough for a weeknight.
Ingredients
- 1.5 lb sirloin steak, cut into 1-inch cubes
- 1.5 lb baby potatoes, quartered (about 1/2-inch pieces)
- 2 tbsp olive oil, divided
- 1 tsp kosher salt, plus more to taste
- 1 tsp black pepper
- 1 tsp smoked paprika
- 0.5 tsp garlic powder
- 6 tbsp unsalted butter
- 5 cloves garlic, minced
- 0.5 tsp red pepper flakes, optional
- 0.25 cup chopped fresh parsley, plus more for serving
- Flaky sea salt, for finishing (optional)
Equipment
A large heavy skillet (12-inch cast iron or stainless — nonstick won’t sear as well), a microwave-safe bowl with a lid (or a medium pot) for par-cooking the potatoes, tongs, and an instant-read thermometer.
Instructions
- Par-cook the potatoes. Place the quartered potatoes in a microwave-safe bowl with 2 tablespoons of water, cover, and microwave on high 4–5 minutes, until just fork-tender at the edges but still firm in the center. (No microwave? Boil in salted water 5 minutes, then drain well.) Drain any water and pat the potatoes very dry.
- Season the steak. Pat the steak cubes dry with paper towels. Toss with 1 tablespoon of the olive oil, the kosher salt, black pepper, smoked paprika, and garlic powder until evenly coated. Let them sit at room temperature while the skillet heats.
- Crisp the potatoes. Heat the remaining 1 tablespoon olive oil in the large skillet over medium-high heat until shimmering. Add the potatoes in a single layer, cut-side down where possible. Cook undisturbed 3–4 minutes, then flip and cook 4–5 minutes more, until deeply golden and crisp on at least two sides. Transfer to a plate.
- Sear the steak bites. Return the skillet to high heat until it just starts to smoke. Add half the steak cubes in a single layer with space between them. Sear 2 minutes without moving, flip, and sear 1–2 minutes more. Transfer to the plate with the potatoes and repeat with the remaining steak. Pull them at 130–135°F for medium-rare; they carry over a few degrees as they rest.
- Make the garlic butter. Reduce the heat to medium-low. Add the butter to the skillet and let it melt, scraping up the browned bits. Stir in the minced garlic and red pepper flakes (if using) and cook 30–45 seconds, just until fragrant.
- Toss and rest. Return the steak bites and potatoes to the skillet and toss to coat in the garlic butter, about 1 minute. Shower with the parsley, finish with flaky sea salt if you like, and rest 3 minutes before serving so the juices settle.
Doneness cues: Use the thermometer — color lies. For 1-inch sirloin cubes: 125°F = rare, 130–135°F = medium-rare, 140–145°F = medium. USDA recommends 145°F with a 3-minute rest for whole beef cuts; pulling at 130–135°F and resting gives you a rosy medium-rare. The potatoes are done when a knife slides in with slight resistance and the cut faces are deeply browned and crisp.
25-Minute Garlic Butter Steak Bites & Potatoes
Ingredients
Equipment
Method
- Place the quartered potatoes in a microwave-safe bowl with 2 tablespoons of water, cover, and microwave on high 4–5 minutes, until just fork-tender at the edges but still firm in the center. (No microwave? Boil in salted water 5 minutes, then drain well.) Drain any water and pat the potatoes very dry.
- Pat the steak cubes dry with paper towels. Toss with 1 tablespoon of the olive oil, the kosher salt, black pepper, smoked paprika, and garlic powder until evenly coated. Let them sit at room temperature while the skillet heats.
- Heat the remaining 1 tablespoon olive oil in the large skillet over medium-high heat until shimmering. Add the potatoes in a single layer, cut-side down where possible. Cook undisturbed 3–4 minutes, then flip and cook 4–5 minutes more, until deeply golden and crisp on at least two sides. Transfer to a plate.
- Return the skillet to high heat until it just starts to smoke. Add half the steak cubes in a single layer with space between them. Sear 2 minutes without moving, flip, and sear 1–2 minutes more. Transfer to the plate with the potatoes and repeat with the remaining steak. Pull them at 130–135°F for medium-rare; they carry over a few degrees as they rest.
- Reduce the heat to medium-low. Add the butter to the skillet and let it melt, scraping up the browned bits. Stir in the minced garlic and red pepper flakes (if using) and cook 30–45 seconds, just until fragrant.
- Return the steak bites and potatoes to the skillet and toss to coat in the garlic butter, about 1 minute. Shower with the parsley, finish with flaky sea salt if you like, and rest 3 minutes before serving so the juices settle.
Notes
Nutrition note
Protein is estimated at about 36g per serving, calculated from USDA FoodData Central values for the listed ingredients — this is an estimate, not a lab analysis. Actual values vary by brand and preparation.
Substitutions and tips
- Other cuts: Ribeye or strip steak work beautifully (richer, pricier). Avoid stew meat — it needs low-and-slow braising, not a hot sear.
- No cast iron? Stainless steel sears nearly as well. Nonstick will cook the steak but won’t build the same crust — still tasty, just less char.
- Make it a full meal: add halved Brussels sprouts or green beans with the potatoes in step 3, or serve over a simple arugula salad.
- Dairy-free: swap the butter for 4 tablespoons olive oil plus 1 tablespoon of a buttery spread, and add the garlic off-heat so it doesn’t scorch.
- Don’t skip the par-cook. Raw potato chunks need 20+ minutes in a skillet; the microwave jump-start is what keeps this at 25 minutes.
Storage and reheating
Refrigerate leftovers within 2 hours in an airtight container for up to 3 days. Reheat in a hot skillet over medium-high heat 3–4 minutes, tossing, until warmed through — the microwave turns the crust soggy and overcooks the steak. Not recommended for freezing (the potatoes go mealy and the steak toughens). If you must reheat steak to safe temps, bring leftovers to 165°F.
Frequently asked questions
What cut of beef is best for steak bites? Sirloin is the sweet spot: tender enough for a fast sear, lean enough to keep the price sane. Ribeye and strip are more indulgent; flank works if you cut it into 1-inch cubes against the grain.
How do I get a good sear instead of gray, steamy beef? Three rules: pat the meat very dry, get the pan ripping hot before the beef goes in, and don’t crowd — sear in two batches with space between the cubes.
Can I use russet potatoes instead of baby potatoes? Yes — peel (or don’t) and cut into 1/2-inch dice, then par-cook the same way. The smaller the dice, the faster they crisp.
Why rest the steak? Resting 3–5 minutes lets the juices redistribute instead of flooding the pan. The internal temp also rises a few degrees — carryover cooking — so pull the bites a touch early.
Is this good for meal prep? It’s best fresh, honestly — reheated steak never quite recaptures the sear. If you do prep it, slightly undercook the bites (pull at 120–125°F) so reheating in a hot skillet finishes them without going gray.
Can I make it spicy? The red pepper flakes give gentle heat. For more, add a diced jalapeño with the garlic in step 5, or finish with your favorite hot sauce.
More steakhouse-fast skillet dinners
For another steakhouse-fast skillet, our 30-Minute Beef & Broccoli Stir-Fry Bowls sear flank steak in a garlic-ginger glaze. More one-pan dinners: 30-Minute Bang Bang Chicken & Broccoli brings the sweet-heat. Sheet-pan fans, try 30-Minute Sheet Pan Chicken Fajitas next.