
Beef Stir Fry with Glossy Tangy Savory Sauce
By Isabella Quinn
Prep
10 min
Cook
15 min
Total
25 min
Servings
4
Level
Easy
For a busy weeknight dinner, this beef stir fry brings thin, tender beef strips, bell peppers, and onions together in a tangy, savory, lightly sweet sauce. A cornstarch and baking-soda treatment helps the beef cook with crisp edges and a tender texture, ready for rice or noodles.
Sirloin, flank, skirt, or flat-iron steak works well because these lean, tender cuts cook quickly and take on the sauce. Sesame oil, cornstarch, baking soda, and salt coat the sliced beef before it rests. Hoisin or oyster sauce, soy sauce, rice vinegar, and brown sugar make the sauce, while a separate cornstarch-and-water slurry gives it body.
Start with a hot wok or large skillet, and listen for the beef to sizzle as it reaches the pan. The beef should cook in a single layer until no longer pink, while peppers and onions should remain tender-crisp before the sauce goes in. The common trouble spot is crowding the pan, which prevents browning and can leave the beef steaming instead.
Serve the stir fry over rice, noodles, or quinoa, with bok choy, green beans, cucumber salad, or spring rolls alongside. Leftovers can be warmed gently on the stove or in short microwave intervals, though the vegetables soften further after reheating.
Why you'll love this recipe
- Weeknight cooks can put dinner on the table in 25 minutes, because the beef, vegetables, and sauce each cook quickly in the same wok or skillet.
- Families get a flexible main dish, since rice or noodles can turn the saucy beef and tender-crisp vegetables into a fuller supper.
- Picky eaters can start with familiar peppers and onions, while the recipe allows other vegetables to be chosen and cooked by their timing.
- Tender beef appeals at the table because thin against-the-grain strips rest with sesame oil, cornstarch, baking soda, and salt before cooking.
- Leftovers remain practical for several days, and gentle stovetop reheating lets you stir the sauce and beef together without extra preparation.
- Hosts can cook in batches when needed, because keeping the beef in a single layer supports browning rather than crowding the pan.
Ingredients
- •20 oz beef steak (use tender, lean cuts such as flank steak, skirt steak, or flat iron; larger pieces or pre-sliced)
- •1 Tbsp sesame oil
- •1 tsp cornstarch
- •0.5 tsp baking soda
- •0.5 tsp sea salt
- •3 Tbsp hoisin sauce or oyster sauce
- •2 Tbsp soy sauce (regular or low-sodium; tamari or coconut aminos may be used)
- •2 Tbsp rice vinegar (or apple cider vinegar or Shaoxing wine)
- •1 Tbsp brown sugar (or honey, maple syrup, or a sugar alternative)
- •1 Tbsp cornstarch (or arrowroot flour or tapioca starch)
- •1 Tbsp water
- •11 oz bell peppers (mixed colors)
- •4 oz onion (1 small)
- •1.4 oz green onions
- •0.25 cup vegetable oil (or canola oil)
- •0.3 oz garlic (2 cloves)
- •0.2 oz ginger (1/2 Tbsp, minced)
- •sesame seeds (to taste, raw or toasted)
Instructions
- 1
If not using pre-sliced beef, freeze it for 30 minutes to make it easier to cut.
- 2
Cut the beef into thin 1/4-inch strips against the grain.
- 3
Add the beef to a bowl with the sesame oil, baking soda, cornstarch, and salt; mix well, massaging with your hands.
- 4
Set the beef aside for 15-30 minutes to marinate.
- 5
Mix the sauce ingredients, excluding the garlic and ginger, in a small bowl.
- 6
Mix the cornstarch and water into a slurry in a separate bowl.
- 7
Mince the garlic and ginger.
- 8
Cut the green onion greens lengthwise into long strips and slice the white parts into rounds.
- 9
Slice the bell peppers, removing the ribs and seeds, and slice the onion pole to pole into even-sized strips.
- 10
Heat about one-third of the oil in a large skillet or wok over medium-high heat. Add the beef in a single layer, working in batches if needed, and cook untouched for 2-3 minutes per side until no longer pink.
- 11
Add another one-third of the oil and stir-fry the peppers and onions for 2-3 minutes until tender-crisp.
- 12
Heat the remaining oil, reduce the heat to medium, and sauté the garlic and ginger for 1-2 minutes.
- 13
Whisk the stir-fry sauce and cornstarch slurry again, add both to the pan, and cook for 1-2 minutes while stirring constantly until glossy and thickened.
- 14
If the sauce is not thick enough, add more cornstarch slurry; if it is too thick, add water or beef broth.
- 15
Add the cooked beef and vegetables back to the pan with the green onions, stir, and serve optionally sprinkled with sesame seeds.
FAQ
Nutrition (per serving)
Calories
541
Protein
31g
Fat
38g
Carbs
20g
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