1Pare outer layer from broccoli. Cut broccoli lengthwise into 1-inch stems; remove flowerets. Cut stems diagonally into 1/4-inch slices. Place broccoli stems in boiling water; heat to boiling. Cover and cook 30 seconds. Add flowerets; heat to boiling. Cover and cook 30 seconds; drain. Immediately rinse in cold water; drain.
2Cut green onions into 1/2-inch pieces; slice lengthwise in half. Mix cornstarch and water.
3Heat wok or 12-inch skillet over high heat. Add vegetable oil; rotate wok to coat side. Add broccoli and garlic; stir-fry 1 minute.
4Add broth; heat to boiling. Stir in cornstarch mixture; cook and stir until thickened. Stir in crabmeat, green onions and sesame oil; cook and stir 1 minute.