This 20-minute Asian beef stir fry is my go-to when I need dinner fast and I’m not willing to settle for something boring. Tender strips of beef, a handful of crisp vegetables, and a savory soy-based sauce come together in one pan.

It tastes like takeout but comes together faster than delivery.

Why This Stir Fry Works

Thinly sliced beef seared over high heat stays tender instead of turning chewy. And because everything cooks in one wok or skillet, cleanup is almost nonexistent.

The sauce is simple but balanced: salty from soy, a little sweet from brown sugar, and just enough cornstarch to cling to every strand of beef and veg. You don’t need a dozen bottles to make it taste like the real thing.

Ingredients

1 lb beef sirloin or flank steak: sliced thin against the grain
2 tbsp soy sauce, divided: use low-sodium if you prefer less salt
1 tbsp cornstarch: helps the beef stay tender and the sauce thicken
1 tbsp vegetable oil: any neutral oil with a high smoke point works
3 cups mixed vegetables: bell pepper strips, broccoli florets, and snap peas are great here
3 cloves garlic, minced
1 tbsp grated fresh ginger
3 tbsp soy sauce: for the stir fry sauce
1 tbsp brown sugar: light or dark, it balances the salt
1 tsp toasted sesame oil: adds nutty depth
1/2 cup beef broth or water: loosens the sauce
1 tsp cornstarch mixed with 1 tbsp water: a slurry for the final gloss
2 green onions, sliced: for serving
1 tsp sesame seeds: optional, for a little crunch

Variations / Substitutions

Protein: Swap beef for thinly sliced chicken thigh and adjust the cook time by a minute or two.
Gluten-free: Use tamari instead of soy sauce and check that your cornstarch is gluten-free.
Vegetables: Use whatever crisp vegetables you have on hand, like bok choy, zucchini strips, or shiitake mushrooms.
Heat: Add 1/2 teaspoon of red pepper flakes with the garlic and ginger if you want a kick.

Hearty Beef Stew goes perfectly with this stir fry for a cozy meal.

How to Make 20-Minute Asian Beef Stir Fry

Step 1: Slice and Toss the Beef

Slice the 1 lb beef against the grain into strips about 1/4 inch thick. Toss the beef with 1 tablespoon of the soy sauce and the 1 tablespoon cornstarch right on a cutting board or in a bowl. Let it sit while you prep the vegetables; the cornstarch helps coat the beef and keeps it tender during cooking.

The strips will look a little sticky and pale, which means the cornstarch is doing its job.

Step 2: Whisk the Stir Fry Sauce

In a small bowl or measuring cup, combine the 3 tablespoons soy sauce, 1 tablespoon brown sugar, 1 teaspoon sesame oil, 1/2 cup beef broth, and the cornstarch slurry (1 teaspoon cornstarch mixed with 1 tablespoon water). Whisk until the sugar and cornstarch dissolve and the mixture looks smooth and dark amber.

This way, the sauce is ready to pour the moment you need it. Stir fry moves fast, and measuring mid-cook leads to burnt garlic.

Step 3: Sear the Beef

Set a large wok or heavy skillet over high heat and add the 1 tablespoon oil. When the oil just begins to shimmer and a wisp of smoke appears, lay the beef strips in a single layer. You’ll likely need to work in two batches so the pan doesn’t crowd. Cook for about 2 minutes without moving them, then flip and cook another 1 to 2 minutes until browned but still pink inside. Remove the beef to a plate.

You’ll hear a sharp sizzle and see deep brown edges where the meat hit the metal. Crowding the pan makes the beef steam instead of sear, so take the extra minute for two rounds.

Step 4: Cook the Vegetables

Without wiping the pan, toss in the 3 cups mixed vegetables. Stir fry them over high heat for 2 to 3 minutes, just until the broccoli turns bright green and the peppers soften a touch at the edges. Add the 3 minced garlic cloves and the 1 tablespoon ginger and stir constantly for 30 seconds, until you smell them strongly.

The vegetables should still have some snap. Nobody wants mushy stir fry.

Step 5: Toss and Serve

Return the seared beef and any juices back to the pan. Pour in the whisked sauce and let it bubble for 1 minute, tossing everything together with tongs or a spatula. The sauce will thicken slightly and cling to every piece. Remove from heat and scatter the sliced green onions and sesame seeds on top. Pile it over steamed rice and serve while it’s smoking hot.

The steam rising off the pan and the glossy sauce coating the beef is exactly the moment you want to put dinner on the table.

Tips for the Best Beef Stir Fry

Chill the beef: Pop the steak in the freezer for 15 to 20 minutes before slicing. It firms up just enough to cut paper-thin strips.
Have everything ready: The cooking goes fast, so measure all your sauce ingredients, chop the vegetables, and keep the plate for the beef nearby before you turn on the heat.
Don’t skip the slurry: That final cornstarch-and-water mixture gives the sauce its restaurant-style sheen and body. Add it cold and stir right away.
Use a big pan: A crowded wok drops the temperature and steams your food. If you don’t have a large enough pan, cook the vegetables after the beef in the same hot pan without washing it.

Storing Leftover Stir Fry

Refrigerate: Store in an airtight container for up to 3 days. The sauce will keep the beef moist.
Reheat: Warm it in a hot skillet over medium-high heat for 2 to 3 minutes to bring back some of the texture. A microwave works in a pinch but will soften the vegetables more.

What to Serve with Asian Beef Stir Fry

Steamed jasmine rice soaks up the sauce without competing. If you want something lighter, spoon the stir fry into crisp butter lettuce leaves for handheld wraps. For noodles, boil lo mein or rice noodles, drain them, and toss them in the pan with the finished stir fry to coat.

Frequently Asked Questions

Can I use chicken instead of beef?

Yes. Use boneless chicken thighs sliced thin, and sear them the same way. Cook until no longer pink, about 3 to 4 minutes per batch.

What if I don’t have a wok?

A large nonstick or carbon steel skillet works well. The key is high heat and enough room to let the meat brown, so use the widest pan you own.

How do I keep the beef from getting chewy?

Slice it very thin against the grain and don’t overcook it. A quick 2-minute sear on each side leaves it tender, while longer cooking tightens the muscle fibers.

Can I use frozen vegetables?

You can, but they release more water and won’t get the same crisp-tender bite. Thaw them first and pat them dry, then stir fry for 1 to 2 minutes instead of 2 to 3.