Mongolian Beef – A Takeout-Style Favorite You Can Make at Home

Mongolian beef is a classic Chinese-American dish known for its bold, slightly sweet, and savory flavors with a touch of heat. Tender strips of flank steak are pan-fried until crisp on the edges, then tossed in a glossy soy-based sauce with garlic, ginger, and a hint of brown sugar. The result? A crave-worthy dinner that tastes like it came straight from your favorite takeout spot — but made in your own kitchen in just 30 minutes.

Served over steamed rice or stir-fried noodles and garnished with green onions, this dish is quick, flavorful, and ultra-satisfying. Perfect for weeknight dinners, meal prep, or even a cozy date night in.

Ingredients Overview

Let’s take a closer look at what you’ll need to create Mongolian beef and how to make it fit your preferences.

Main Ingredients

• Flank Steak: Lean and flavorful, flank steak is the most commonly used cut for Mongolian beef. Slice thinly against the grain for tenderness. Skirt steak or sirloin also work well.

• Cornstarch: Lightly coats the beef for that signature crispy edge when seared and also helps thicken the sauce.

• Garlic & Ginger: Aromatic essentials that build bold, authentic flavor in the sauce.

• Green Onions: Stirred in at the end for color, crunch, and freshness.

For the Sauce

• Soy Sauce: The base of the sauce. Use low-sodium soy sauce to avoid over-salting.

• Brown Sugar: Adds that characteristic sweetness and creates a caramel-like richness.

• Water or Beef Broth: Thins the sauce to the right consistency and adds depth.

• Sesame Oil: Adds toasty flavor and aroma.

• Red Pepper Flakes (optional): For a mild kick of heat — totally customizable.

Ingredient Tips

• Freeze steak for 20–30 minutes before slicing to get thinner, cleaner cuts.

• Use a carbon steel or cast-iron pan for the best sear on the beef.

• Do not overcrowd the pan when cooking the meat — sear in batches if needed.

Step-by-Step Instructions

1. Prepare the Steak

• Slice 1 lb flank steak thinly against the grain into ¼-inch strips.

• In a large bowl, toss steak slices with ¼ cup cornstarch until evenly coated.

• Let sit for 10 minutes while you prep the sauce and other ingredients.

2. Make the Sauce

In a small bowl or measuring cup, whisk together:

• ½ cup low-sodium soy sauce

• ⅓ cup brown sugar

• ¼ cup water or beef broth

• 1 tsp sesame oil

• 2 cloves garlic, minced

• 1 tbsp fresh ginger, minced or grated

• Optional: ¼–½ tsp red pepper flakes

Set aside.

3. Sear the Beef

• Heat 2–3 tbsp neutral oil (vegetable or avocado) in a large skillet or wok over medium-high heat.

• Add the beef in a single layer (in batches if needed). Sear 1–2 minutes per side until browned and crispy on the edges.

• Remove cooked beef and transfer to a plate.

4. Simmer the Sauce

• Pour the sauce mixture into the pan and bring to a gentle boil.

• Simmer 2–3 minutes, stirring frequently, until slightly thickened.

5. Combine and Finish

• Return the beef to the pan and toss to coat in the sauce.

• Add 4–5 green onions, cut into 2-inch pieces (both white and green parts).

• Stir and cook another 1–2 minutes until the onions soften slightly and everything is glossy and coated.

6. Serve

Serve immediately over:

• Steamed jasmine or basmati rice

• Stir-fried noodles

• Cauliflower rice for a low-carb option

Garnish with extra green onions and toasted sesame seeds if desired.

Tips, Variations & Substitutions

Tips for Success

• Don’t skip the cornstarch coating — it creates that signature crisp texture.

• Sear over high heat for browning, not steaming.

• If you like extra sauce, double the sauce ingredients and simmer longer for a thicker consistency.

Variations

• Spicy Mongolian Beef: Add extra red pepper flakes, a dash of chili oil, or sliced fresh chilies.

• Veggie Boost: Toss in broccoli florets, snap peas, or bell peppers during the last few minutes.

• Mongolian Chicken: Swap steak for sliced chicken breast or thighs.

Substitutions

• Gluten-Free: Use tamari instead of soy sauce, and ensure your cornstarch is gluten-free.

• Lower Sugar: Reduce brown sugar to 2 tablespoons or use coconut sugar.

• No Sesame? Omit the sesame oil or use avocado oil instead.

Serving Ideas & Occasions

This dish is a perfect fit for:

• Quick weeknight dinners

• Takeout-style weekends at home

• Meal prep — reheats well and keeps up to 4 days in the fridge

• Dinner parties when served with sticky rice and sesame green beans

Delicious sides and pairings:

• Garlic green beans

• Egg drop soup

• Crispy spring rolls

• Asian slaw with sesame vinaigrette

Nutritional & Health Notes

Mongolian beef is high in protein and flavorful fats, with a rich sauce that can be adjusted to your preferences.

• Protein-rich: Flank steak delivers lean, high-quality protein.

• Customizable carbs: Serve with cauliflower rice or steamed veggies for lower-carb options.

• Sugar content: Easily adjustable by reducing the brown sugar.

Estimated per serving (1 of 4), without rice:

• ~360 calories

• 28g protein

• 16g fat

• 18g carbohydrates

FAQs

Q1: Can I make Mongolian beef ahead of time?

A1: Yes! Cooked Mongolian beef stores well in the fridge for up to 4 days. Reheat gently in a skillet or microwave, adding a splash of water or broth to loosen the sauce.

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Q2: What’s the best cut of beef for this recipe?

A2: Flank steak is ideal due to its tenderness when sliced thin. Skirt steak, sirloin, or even ribeye are good alternatives.

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Q3: Can I make it less sweet?

A3: Absolutely. Reduce the brown sugar to 2 tablespoons, or use a sugar substitute like monk fruit or stevia if needed.

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Q4: Can I freeze Mongolian beef?

A4: Yes, but it’s best without the green onions (add them fresh when reheating). Freeze cooled portions in airtight containers for up to 2 months.

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Q5: Can I air-fry the beef?

A5: You can. Lightly coat the cornstarch-covered beef with oil spray and air fry at 400°F for 8–10 minutes, flipping halfway, then toss in the hot sauce.

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Q6: Is Mongolian beef spicy?

A6: Not by default. The sauce is primarily sweet and savory. Spice can be added with red pepper flakes, chili paste, or chili oil.

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Q7: Can I make it in a slow cooker?

A7: Yes. Brown the beef first, then add to the slow cooker with the sauce. Cook on low for 3–4 hours. Thicken with cornstarch slurry at the end if needed.

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