Step 1

Toss the beef with cornstarch, soy sauce, and pepper in a bowl. Set aside while you prep the stir-fry sauce and vegetables.

Step 2

Stir together the ingredients for the stir-fry sauce and set aside. Taste and adjust seasoning if needed.

Step 3

Heat the oil in a large skillet or wok over medium-high heat. Once the oil is hot, add the beef in a single layer. Cook until just cooked through and browned about 3-4 minutes. Remove the beef using a slotted spoon. Set aside.

Step 4

If needed, add an extra drizzle of oil to the pan. Add the vegetables to the pan. Cook for 4-5 minutes until the vegetables are tender-crisp.

Step 5

Add the beef back to the pan along with the stir-fry sauce. Cook for 1-2 minutes until the sauce thickens.