Mongolian Beef and Broccoli

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This Mongolian Beef and Broccoli recipe is exactly the kind of weeknight dinner I reach for when I want something fast, satisfying, and reliably comforting. It delivers crispy edges on the beef, a glossy sweet-savory sauce, and bright-tender broccoli — all over steaming jasmine rice. The technique is straightforward and built around small tricks that make a big difference in texture and flavor.

I wrote this version to be practical: clear steps, honest timing, and tips that prevent the usual problems (soggy broccoli, under-seasoned sauce, or chewy beef). Use the prep steps to stagger tasks and this comes together in under 30 minutes active work once the steak is marinated.

Below you’ll find an ingredient list with notes, a step-by-step directions section that follows the original recipe exactly but clearer, and several extra sections to help you adapt, store, and troubleshoot. Let’s get cooking.

Ingredient List

1 pound flank steak, cut into ¼-inch strips — lean, thinly sliced steak gives quick cooking and those edges that crisp up nicely.

¼ cup plus 1 tablespoon cooking oil, divided — oil for marinating and frying; the extra tablespoon is for the initial marinade step and the rest for sautéing so beef crisps without sticking.

¼ cup plus 2 teaspoons low-sodium soy sauce, divided — split between the marinade and the sauce for balanced saltiness and depth.

5 tablespoons cornstarch, divided — half is used to coat the meat for a crispy exterior and the rest for the marinade to begin tenderizing and creating a glossy sauce base.

3 cloves garlic, finely chopped — adds aromatic punch; mince finely so it flavors the sauce quickly without burning.

2 teaspoons fresh ginger, minced — bright, warming counterpoint to the sweet sauce; use fresh not ground for best flavor.

⅓ cup water — thins and balances the sauce so it’s saucy but not gloppy.

2 tablespoons brown sugar — adds sweetness and a touch of molasses flavor that makes the sauce rich and caramel-like.

2 tablespoons hoisin sauce — deepens umami and gives color and body to the sauce.

1 head broccoli, cut into florets — choose firm, bright-green heads; cut florets into similar sizes so they cook evenly.

2 scallions, cut into 1-inch pieces — added at the end for freshness and mild onion flavor.

Sesame seeds, for garnish — optional but recommended for nutty flavor and a pretty finish.

Cooked jasmine rice, for serving — neutral, fragrant base that soaks up the sauce; keep warm while you finish the stir-fry.

Directions: Mongolian Beef and Broccoli

1. Prepare the steak. Pat the 1 pound flank steak dry with paper towels and slice it into ¼-inch strips across the grain. Dry meat will brown better and the slices will be more tender when cut against the grain.

2. Make the marinade. In a plastic zipper bag combine the sliced steak, 1 tablespoon of the cooking oil, 2 teaspoons of the low-sodium soy sauce, and 2 tablespoons of the cornstarch (from the 5 tablespoons total). Seal the bag and massage briefly so every strip is coated.

3. Chill to marinate. Place the sealed bag in the refrigerator and let the steak marinate for 1 hour. This step lets the cornstarch and soy soak into the meat, starting the tenderizing and helping the final crust form in the pan.

4. Heat the pan. When you’re ready to cook, set a large skillet over medium-high heat and add the remaining cooking oil from the ¼ cup plus 1 tablespoon (that is, the larger portion left after the 1 tablespoon used in the marinade). Let the oil get hot but not smoking.

5. Dredge the beef. Pour the remaining cornstarch (the leftover portion from the 5 tablespoons) onto a plate or shallow bowl. Working in batches so the pan stays hot, remove a few strips of steak from the bag and dredge them through the cornstarch, shaking off any heavy excess. A light, even coating crisps best.

6. Sear the beef in batches. Add the coated strips to the hot skillet in a single layer and sauté until the edges are crispy and browned, about 2 minutes per side. Do not overcrowd — crowding steam-cooks the meat instead of searing it. Transfer cooked strips to a paper towel–lined plate to drain and keep warm; repeat until all the beef is cooked.

7. Sauté aromatics. Reduce the heat slightly if the pan is smoking. Add the finely chopped 3 cloves garlic and 2 teaspoons minced fresh ginger to the skillet and cook, stirring, until fragrant — about 1 minute. Keep an eye on them so they don’t burn.

8. Build the sauce. Stir in the remaining ¼ cup plus 2 teaspoons low-sodium soy sauce, ⅓ cup water, 2 tablespoons brown sugar, and 2 tablespoons hoisin sauce. Bring the mixture to a simmer. Let it bubble gently and thicken, 4 to 5 minutes, stirring occasionally so the flavors meld and the sauce becomes glossy.

9. Add the broccoli. Stir the 1 head of broccoli florets into the skillet, then cover the pan and cook until the broccoli is tender but still bright green, about 3 minutes. The steam trapped by the lid cooks the florets quickly without overcooking them.

10. Finish with scallions and beef. Remove the lid, add the 2 scallions cut into 1-inch pieces, and return the cooked beef to the skillet. Stir everything together until the beef and scallions are completely coated with the sauce and heated through.

11. Serve. Spoon the Mongolian Beef and Broccoli over cooked jasmine rice and garnish with sesame seeds if desired. Serve immediately so the beef retains its crisp edges and the broccoli stays bright.

Why This Recipe is a Keeper

This recipe balances speed and texture. The marinade with cornstarch and the two-step frying method (marinate then dredge) creates that iconic crisp exterior without deep-frying. The sauce is sweet and savory with hoisin and brown sugar for depth; it thickens gently rather than reducing to clumps, so it clings to both beef and broccoli. Finally, the steam/cover step for the broccoli ensures it’s tender but not soggy — an often-missed detail that keeps this dish restaurant-worthy at home.

Dairy-Free/Gluten-Free Swaps

Gluten-free: Use a gluten-free soy sauce or tamari in the same amounts to keep the salt profile consistent.

Dairy-free: This recipe is naturally dairy-free; no swaps needed.

Optional thickener: If you prefer, replace a tablespoon of cornstarch with arrowroot (same amount) for a clearer sauce.

Kitchen Gear Checklist

Large skillet or wok — roomy surface for searing and stir-frying.

Plastic zipper bag — for easy marinating and cleanup.

Plate or shallow bowl — for the cornstarch dredge.

Paper towels — to pat dry steak and drain the fried beef.

Lid for the skillet — for steaming the broccoli quickly.

Sharp knife and cutting board — for thin, even slices of flank steak and uniform broccoli florets.

Troubles You Can Avoid

Soggy beef: Don’t overcrowd the pan. Cook in batches so each strip gets direct contact with the hot surface and crisps.

Tough steak: Slice against the grain into thin strips and don’t overcook. The 2 minutes per side guideline produces tender edges without toughness.

Burnt garlic: Add garlic and ginger after removing most of the beef and lower the heat slightly; they only need about 1 minute to become fragrant.

Watery sauce: Make sure the sauce simmers for the full 4–5 minutes to allow the cornstarch on the beef and the sauce itself to thicken properly.

Soggy broccoli: Cut florets uniform in size and cover the pan for just about 3 minutes to steam until bright-tender.

Fresh Takes Through the Year

Spring

Add snap peas: Toss in a handful of snap peas with the broccoli for extra crunch and a fresh vegetable mix.

Summer

Charred broccoli: Grill or roast the broccoli separately to add smoky notes and swap in at the end to keep textures varied.

Fall

Root veg option: Add thinly sliced carrots or parsnips with the broccoli — steam a little longer so they become tender.

Winter

Heartier finish: Serve over warm brown rice or toss some roasted mushrooms into the sauce for added umami in colder months.

Testing Timeline

Marinate: 1 hour in refrigerator — don’t skip this, it improves texture.

Prep veg and aromatics: 10 minutes to cut broccoli, mince garlic and ginger, slice scallions.

Sear beef: About 2 minutes per side, in batches — total 8–12 minutes depending on pan size and batch count.

Sauce simmer: 4–5 minutes to thicken after adding soy, water, brown sugar, and hoisin.

Broccoli steam: 3 minutes covered until bright-tender.

Total active time: Approximately 25–35 minutes from pan to table, plus 1 hour marinating.

Save for Later: Storage Tips

Refrigerate: Store leftovers in an airtight container for up to 3 days. The sauce will continue to soften the beef over time.

Reheat: Gently reheat in a skillet over medium heat with a splash of water to loosen the sauce — microwaving can make the beef chewier.

Freeze: You can freeze the cooked beef and sauce (without rice) for up to 2 months. Thaw in the refrigerator overnight and reheat in a skillet.

Rice storage: Keep rice separately to prevent it from absorbing too much sauce in storage.

Mongolian Beef and Broccoli Q&A

Q: Can I use a different cut of beef?
A: Yes. Flank steak is lean and slices nicely; skirt or flat iron steak also work. Aim for a cut that can be sliced thinly against the grain. Tougher cuts need very thin slices and short cooking times to stay tender.

Q: Can I make this gluten-free?
A: Absolutely. Swap regular low-sodium soy sauce for gluten-free tamari in the same quantities.

Q: My sauce is too thin — how do I fix it?
A: Simmer it a bit longer uncovered to reduce, or stir a tiny slurry of 1 teaspoon cornstarch mixed with 1 tablespoon water into the sauce and cook until it thickens.

Q: How do I keep the beef crispy when serving?
A: Cook the beef in batches and place on paper towels to drain briefly. Add it back to the sauce only at the end to coat; serve immediately so it keeps some crisp texture.

Q: Can I prep parts of this ahead?
A: Yes. Slice the steak and store it in the marinade overnight (still following the 1-tablespoon oil and cornstarch amounts), and cut the broccoli ahead. Combine and cook later for quick assembly.

Final Thoughts

This Mongolian Beef and Broccoli keeps the best parts of takeout — glossy sauce, crisped beef, and bright veggies — but using straightforward home techniques. The recipe’s structure (marinate, dredge, sear, simmer, steam) is intentionally simple and repeatable. Once you nail the timing for your pan and stove, it’s easy to scale, tweak, and make your own. Keep a jar of hoisin and good-quality soy sauce on hand, and this will become a reliable weeknight favorite.

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