Put a steamer basket into large pan or wok with 3 inches of water. Place cabbage leaves in steamer and bring to a simmer. Steam for 3-4 minutes until cabbage is pliable.
Finely chop chicken and combine with remaining Mu Shu ingredients. Fill each steamed cabbage leaf with 2-3 Tablespoons of filling and roll into tight bundles. Lay in steamer basket; steam for 15 minutes until chicken is cooked through. Serve with dipping sauce.
For Dipping Sauce
Whisk together ingredients in a small bowl. Serve with Cabbage Rolls.