

Heat oil in a large nonstick frypan over medium heat.
Add black bean mixture; cook, stirring constantly until well blended, about 1 minute.
Add broth and soy sauce; cook, stirring, about 1 minute.Increase heat to medium-high.
Add asparagus and scallions; cook, stirring, until vegetables are crisp-tender, 3-4 minutes.
Add cornstarch mixture to pan; stir until sauce thickens, 1-2 minuites.