Copycat Panda Express Black Pepper Sirloin Steak

Panda Express serves its black pepper steak as a premium Angus entree, and this copycat Panda Express Black Pepper Sirloin Steak recipe brings that same seared-beef-and-pepper plate into your own kitchen with a friendlier cut.

I make it on weeknights when I want that peppery takeout plate but would rather keep dinner spending down. The move that matters is heat: you sear the thin-sliced beef hard and fast, pull it out, then cook the peppers so they stay crisp before everything goes back together. That quick sear is what keeps a lean cut like sirloin or flank tender instead of chewy.

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Why You’ll Love This Recipe

• Searing the beef in a single layer over high heat gives it a real browned edge instead of the gray, steamed look you get from a crowded pan.
• Sirloin or flank is a more economical cut than the restaurant’s Angus, and a fast sear keeps it just as tender.
• One pound of steak stretches across four servings once the peppers, onion, and rice come into it, so a modest amount of meat feeds the table.
• The whole sauce is built from pantry ingredients like soy sauce, oyster sauce, and cornstarch, with nothing you have to make a special trip for.
• Start to finish it runs about 20 minutes, quick enough for a weeknight when you don’t want to think hard about dinner.
• Leftovers keep for a few days and reheat well, so it earns a spot in the meal-prep rotation.

Ingredients You’ll Need

Here’s what’s worth knowing before you start; the printable card below has the full list with quantities.

• Flank or sirloin steak: both are lean, economical cuts that turn tender with a quick high-heat sear, so they suit this stir-fry better than a fattier cut. Slice it thin and against the grain so each bite stays short-fibered.
• Soy sauce: the salty, savory base of the black pepper sauce. Dark soy deepens the color and flavor, while light soy keeps it brighter and saltier, so use what you have and taste as you go.
• Oyster sauce: two tablespoons bring a rounded, savory depth the soy sauce alone can’t. If you need the dish gluten-free, look for a gluten-free oyster sauce, since standard ones contain wheat.
• Beef broth: half a cup loosens the sauce so it coats rather than clumps; beef or chicken stock stands in fine if that’s what’s open.
• Cornstarch: one tablespoon is what turns the sauce glossy and thick. Whisk it in completely before the sauce hits the pan so it doesn’t seize into lumps.
• Brown sugar and sesame oil: a spoon of brown sugar balances the salt, and a teaspoon of sesame oil adds a toasted, nutty finish, so go light since it’s strong.
• Freshly ground black pepper: half a teaspoon is the backbone of the dish, and grinding it fresh gives a warmth that pre-ground pepper loses on the shelf.
• Bell peppers and onion: one green pepper, one red, and a large onion add color and crunch, and they help a single pound of beef go further.

How to Make Panda Express Black Pepper Sirloin Steak

Scroll down for the full recipe card containing a full printable recipe and measurements in both US customary and metric units.

This comes together in a few quick stages: mix the sauce, sear the beef, cook the vegetables, then bring it all together.

Whisk the sauce first

In a bowl, whisk the soy sauce, oyster sauce, cornstarch, brown sugar, minced garlic, beef broth, sesame oil, and black pepper until it’s completely smooth.

Getting this ready before anything hits the pan means you’re not scrambling later, and it gives the cornstarch time to dissolve so the sauce turns glossy instead of lumpy.

Give it one more stir right before it goes in, since the cornstarch settles to the bottom while it sits.

Sear the beef

Heat the vegetable oil in a large skillet or wok over high heat until it shimmers. Add the sliced beef in a single layer and stir-fry for 2 to 3 minutes until browned, then take it out and set it aside.

High heat is the whole point here: it sears the beef rather than steaming it, and a pan that’s too cool or too crowded gives you gray, watery meat.

If your pan is on the small side, sear in two batches so every piece touches the metal.

Stir-fry the peppers and onion

In the same pan, add the sliced bell peppers and onion and stir-fry for 3 to 4 minutes, just until they soften slightly but keep a good bite.

They’ll cook a little more once the beef and sauce come back, so pulling them while they’re still crisp is what keeps them from going to mush.

Combine and coat

Return the beef to the pan and pour in the sauce. Stir everything together and cook for 1 to 2 minutes, until the sauce thickens and coats every piece of beef and vegetable.

Watch it closely, because once it heats up, the cornstarch grabs fast, and it’s done in well under two minutes.

Serve and garnish

Serve hot with steamed rice or noodles. Top with sesame seeds and chopped fresh cilantro. It’s best right away, while the beef is still glossy and the peppers still have snap.

Recipe Notes and Expert Tips

• Cut across the muscle fibers, not along them; shortening the fibers is what keeps each bite tender rather than chewy.
• Let the pan get properly hot before the beef goes in. A lukewarm pan is the single most common reason home stir-fried beef turns out gray and tough instead of seared.
• Re-whisk the sauce right before you add it. The cornstarch drops to the bottom as it sits, and if you pour off the top you’ll get a thin sauce that never thickens.
• Pull the vegetables while they still have crunch. Three to four minutes is plenty, since they keep cooking in the residual heat once the sauce goes in.
• If the sauce over-thickens before you’re ready to serve, loosen it with a splash of beef broth or water over low heat.
• For a little heat, a pinch of red pepper flakes stirred in with the sauce is the easiest route, since the dish itself gets its warmth from black pepper rather than chili.

Recipe Variations

• To keep it gluten-free, swap the soy sauce for coconut aminos and use a gluten-free oyster sauce. It’s a well-supported change that doesn’t shift the timing or the way the sauce thickens.
• To stretch it further, fold in mushrooms, baby broccoli, green beans, or baby corn alongside the peppers. That addition is well supported; just know the extra vegetables add a minute or two and a little more moisture to cook off.
• For gentle heat, I stir a pinch of red pepper flakes in with the sauce. That one is tested, since it’s built right into how I make this, and it changes nothing else about the dish.
• Flank and sirloin are both tested here and what I use; a fattier cut like ribeye is a supported swap that works too, though it renders more fat into the sauce, so a lean cut gives you a cleaner result.

How to Store Leftovers

Store the beef separately from the rice or noodles to prevent sogginess, and keep it in the fridge for up to 3 days. Your refrigerator should be set to 40°F (4°C) or below.

To reheat, warm it in a skillet over medium-high heat or in the microwave until it reaches 165°F (74°C) all the way through, adding a small splash of water or beef broth if the sauce has tightened up in the cold.

For make-ahead cooking, you can freeze cooled portions in freezer-safe containers for up to 2 months, then thaw them overnight in the fridge before reheating.

Give everything a good stir in the pan as it warms so the sauce loosens and coats the beef the way it did fresh.

What to Serve With Panda Express Black Pepper Sirloin Steak

Steamed white or fried rice is the natural bed for this one, catching the black pepper sauce that would otherwise pool on the plate, and noodles like lo mein or plain ramen tossed in a little sesame oil do the same job.

A batch of Copycat Panda Express Super Greens pairs broccoli, cabbage, and kale seasoned with garlic and sesame alongside the beef and rice.

A cool cucumber salad in rice vinegar plays off the warm, savory steak nicely, and steamed broccoli or edamame round out the meal without fighting the sauce for attention.

FAQs

More Copycat Restaurant Recipes to Try at Home

If you love takeout but want to save some cash, these easy restaurant copycat recipes make it easy to recreate your favorites at home.

• Copycat Panda Express Beijing Beef: when you want the crunchy, sweet-and-spicy side of the Panda menu, this crispy fried beef is where I go.
• Copycat Panda Express Teriyaki Chicken: a stickier, sweeter option for rice night, and the thighs keep it juicy.
• Copycat Olive Garden Chicken Scampi Pasta: for the nights I want creamy pasta instead of stir-fry, this one fills the gap.
• Beef and Potato Burrito (Taco Bell Copycat): a hand-held dinner the kids happily finish, with the potatoes crisped in the air fryer.