Whisk together first 5 ingredients; set aside. In a 6-qt. stockpot, bring 10 cups water to a boil. Add beans in batches; cook, uncovered, just until crisp-tender, 2-3 minutes. Remove beans and immediately drop into ice water. Drain and pat dry. , Coat stockpot with cooking spray. Add beans; cook, stirring constantly, over high heat until slightly blistered, 2-3 minutes. Add sauce; continue stirring until beans are coated and sauce starts to evaporate slightly, 2-3 minutes. Remove from heat.