Heat oil in large skillet or wok set over medium-high heat; cook bok choy, ginger, garlic and chili flakes, stirring, for about 2 minutes or until tender-crisp.
Stir in soy sauce and 1 tbsp water; cover and cook for about 3 minutes or until greens are just tender. Transfer to serving plate. Drizzle with balsamic glaze and sprinkle with sesame seeds.
Tip: Substitute Chinese broccoli (gai lan), spinach, kale, mustard greens or Napa cabbage for bok choy if desired.