If you love asian food, you'll love this Chinese style flank steak. ...Three Pepper Steak.
(Stir-fried beef in a light soy sauce. Serve over steamed rice.)
Cut beef in half lengthwise, then crosswise into 1/4-inch-thick slices. Set aside.
Combine soy sauce, cornstarch, brown sugar, sesame oil and red pepper flakes in medium bowl; stir until smooth. Add beef and toss to coat.
Heat 1 tablespoon vegetable oil in a large nonstick skillet or wok over high heat. Add bell peppers; stir-fry until crisp-tender. Remove to large bowl.
Add 1 tablespoon vegetable oil and heat 30 seconds. Add half of beef mixture to wok; stir-fry until well browned. Remove beef to bowl with bell peppers.
Repeat with remaining 1 tablespoon vegetable oil and beef mixture. Reduce heat to medium.
Add onion; stir-fry about 2 minutes or until softened. Add garlic; stir-fry 30 seconds. Return bell peppers, beef and any accumulated juices to wok; cook until heated through.
Spoon rice into serving dish; top with beef and vegetable mixture.