Step 1

In a wok or large nonstick pan, heat the olive oil over medium-high heat. Add the flank steak, and cook for about 3-4 minutes, depending on the thickness of the beef, until browned on all sides. Season to taste with salt and pepper.

Step 2

Remove the meat with a slotted spoon, set aside, and pour off the fat from the pan. Add the asparagus to the pan, and cook for 2-3 minutes until crisp-tender.

Step 3

Return the meat to the pan, add the sauce and toss to coat. Stir in the nuts, and cook for 1 minute more. Season again if needed. Serve hot over rice or noodles.