Hey y’all! If you’re craving a takeout classic with melt-in-your-mouth beef and a sweet-savory glaze, this Instant Pot Mongolian Beef has your weeknight dinner dreams covered. It’s quick, incredibly tasty, and perfect for family meals, busy nights, or even impressing guests with minimal effort. The flavors are rich and bold, and your pressure cooker makes it fork-tender in a flash. Let’s get cooking!
Why You’ll Love This
- Fast weeknight meal—ready in about 30 minutes from start to finish.
- Perfectly tender beef with a silky, flavorful sauce.
- Uses everyday pantry ingredients—no specialty shopping required.
- Kid-friendly and customizable for picky eaters.
- It’s as delicious as takeout, but fresher and healthier!
Ingredients
- 1.5 pounds flank steak, thinly sliced against the grain
- 1/4 cup cornstarch
- 2 tablespoons vegetable oil, divided
- 4 cloves garlic, minced
- 1 tablespoon fresh ginger, grated
- 1 cup low-sodium soy sauce
- 3/4 cup brown sugar, packed
- 1 cup water
- 1/2 teaspoon crushed red pepper flakes (optional)
- 4 green onions, sliced (plus extra for garnish)
- 2 teaspoons toasted sesame oil
- 1 tablespoon sesame seeds (optional, for garnish)
Directions
Step 1: Prep the Steak
Pat 1.5 pounds of flank steak dry with paper towels, then slice thinly against the grain. Toss the strips in a large bowl with 1/4 cup cornstarch until evenly coated. Set aside.
Step 2: Sauté Aromatics
Set the instant Pot to “Sauté” mode. Add 1 tablespoon of vegetable oil. Once hot, add 4 cloves of minced garlic and 1 tablespoon grated ginger; stir for about 30 seconds until fragrant.
Step 3: Sear the Beef
Add half of the steak strips and brown for 1-2 minutes. Remove and repeat with the second tablespoon of oil and the remaining beef. Return all beef to the pot.
Step 4: Add Sauce Ingredients
Pour 1 cup soy sauce, 3/4 cup brown sugar, 1 cup water, and 1/2 teaspoon crushed red pepper flakes (if using) into the pot. Stir well, scraping up any browned bits from the bottom.
Step 5: Pressure Cook
Secure the lid, set to “Sealing,” and cook on Manual/High Pressure for 8 minutes. Once done, allow a natural pressure release for 10 minutes, then carefully quick-release any remaining pressure.
Step 6: Finish & Serve
Stir in 2 teaspoons toasted sesame oil and 4 sliced green onions. Let the sauce thicken for 5 minutes (use “Sauté” if needed for a thicker sauce). Serve hot, garnished with more green onions and sesame seeds.
Notes
- Slice beef thin for optimal tenderness—freezing for 20 minutes before slicing can help.
- Use low-sodium soy sauce to prevent the dish from becoming too salty.
- Add extra cornstarch slurry if you prefer a thicker sauce: mix 1 tablespoon cornstarch with 2 tablespoons cold water and stir in during sauté mode.
Variations
- Chicken Mongolian: Swap sliced chicken breast or thighs for beef, adjusting cook time to 6 minutes.
- Vegetarian Twist: Use strips of portobello mushrooms or tofu in place of beef.
- Spicy Mongolian Beef: Double the red pepper flakes or add sriracha to taste.
Required Equipment
- 6-quart or larger instant Pot/pressure cooker
- Sharp chef’s knife
- Cutting board
- Mixing bowls
- Tongs or spatula
- Measuring cups and spoons
Storage Instructions
Let leftovers cool completely before transferring to an airtight container. Store in the refrigerator for up to 4 days. For longer storage, freeze in a sealed freezer-safe bag or container for up to 2 months. Reheat gently on the stovetop or microwave, adding a splash of water if needed.
Serving Suggestions & Pairings
- Serve over fluffy steamed jasmine or basmati rice.
- Pair with stir-fried broccoli, snap peas, or baby bok choy.
- Add a side of crunchy Asian slaw or spring rolls for a complete feast.
Pro Tips
- Cut the steak against the grain to maximize tenderness.
- Don’t skip browning the meat—it adds incredible depth of flavor.
- Garnish generously with green onions and sesame seeds for restaurant-worthy presentation.
Frequently Asked Questions
1. Can I use a different cut of beef?
Yes! Skirt steak or sirloin also works well—just slice thinly for best results.
2. Does this recipe work in a slow cooker?
Absolutely. Sear the beef first, then cook on low for 4-5 hours or high for 2-3 hours until tender.
3. Can I make this recipe gluten-free?
Yes, simply swap regular soy sauce for a gluten-free tamari or coconut aminos.
Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes
Serves: 4-6 people
Ingredients
- 1.5 pounds flank steak, thinly sliced against the grain
- 1/4 cup cornstarch
- 2 tablespoons vegetable oil, divided
- 4 cloves garlic, minced
- 1 tablespoon fresh ginger, grated
- 1 cup low-sodium soy sauce
- 3/4 cup brown sugar, packed
- 1 cup water
- 1/2 teaspoon crushed red pepper flakes (optional)
- 4 green onions, sliced (plus extra for garnish)
- 2 teaspoons toasted sesame oil
- 1 tablespoon sesame seeds (optional, for garnish)
Instructions
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1Pat 1.5 pounds of flank steak dry with paper towels, then slice thinly against the grain. Toss the strips in a large bowl with 1/4 cup cornstarch until evenly coated. Set aside.
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2Set the Instant Pot to “Sauté” mode. Add 1 tablespoon of vegetable oil. Once hot, add 4 cloves of minced garlic and 1 tablespoon grated ginger; stir for about 30 seconds until fragrant.
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3Add half of the steak strips and brown for 1-2 minutes. Remove and repeat with the second tablespoon of oil and the remaining beef. Return all beef to the pot.
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4Pour 1 cup soy sauce, 3/4 cup brown sugar, 1 cup water, and 1/2 teaspoon crushed red pepper flakes (if using) into the pot. Stir well, scraping up any browned bits from the bottom.
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5Secure the lid, set to “Sealing,” and cook on Manual/High Pressure for 8 minutes. Once done, allow a natural pressure release for 10 minutes, then carefully quick-release any remaining pressure.
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6Stir in 2 teaspoons toasted sesame oil and 4 sliced green onions. Let the sauce thicken for 5 minutes (use “Sauté” if needed for a thicker sauce). Serve hot, garnished with more green onions and sesame seeds.
Approximate Information for One Serving
Nutrition Disclaimers
Number of total servings shown is approximate. Actual number of servings will depend on your preferred portion sizes.
Nutritional values shown are general guidelines and reflect information for 1 serving using the ingredients listed, not including any optional ingredients. Actual macros may vary slightly depending on specific brands and types of ingredients used.
To determine the weight of one serving, prepare the recipe as instructed. Weigh the finished recipe, then divide the weight of the finished recipe (not including the weight of the container the food is in) by the desired number of servings. Result will be the weight of one serving.
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