Ingredients
Equipment
Method
- In a small bowl, whisk together the beef broth, soy sauce, oyster sauce, brown sugar, sesame oil, ginger, garlic, and cornstarch until the cornstarch is fully dissolved. Set aside.
- Slice the flank steak or sirloin as thinly as possible against the grain. For easier slicing, freeze the beef for 20 to 30 minutes beforehand.
- Heat 1 tablespoon of oil in a large skillet or wok over high heat until just smoking. Add the beef in a single layer, working in batches if needed. Sear for 2 to 3 minutes until browned. Remove from the pan and set aside with any juices.
- Add the remaining tablespoon of oil to the same pan. Add the bell peppers and onion wedges and stir-fry over high heat for 3 to 4 minutes until tender-crisp with some charred edges.
- Pour the sauce mixture into the pan with the vegetables. Stir constantly for 1 to 2 minutes until the sauce bubbles and thickens into a glossy glaze.
- Return the seared beef and any resting juices to the pan. Toss everything together for 1 more minute until the beef is fully cooked and evenly coated in the sauce.
- Serve immediately over steamed rice or noodles. Garnish with toasted sesame seeds and sliced green onions.
Notes
Storage: Store in an airtight container for up to 4 days. Add a splash of water or beef broth when reheating to loosen the sauce. Not recommended for freezing as the bell peppers lose texture. Substitutions: Replace beef with thinly sliced chicken breast or pork tenderloin. Add red pepper flakes or sriracha to the sauce for heat. Velveting tip: Toss sliced beef with 1 teaspoon baking soda and 1 tablespoon water, rest 15 minutes, rinse well, and pat dry before searing for extra-tender restaurant-style beef. Sauce tip: Double the sauce ingredients if serving over noodles or for extra sauce over rice.
