In medium bowl, mix chopped meatballs and barbeque sauce.
Separate dough into 8 biscuits. Separate each biscuit into 2 layers; press each to form 4-inch round. For each bao, spoon about 1 tablespoon meatball mixture onto center of each dough round. Bring edge of biscuit together, pinching together in center to form pyramid.
In 5-quart Dutch oven, heat 1 inch water to simmering. Spray metal colander with cooking spray. Arrange 5 or 6 bao in bottom of colander, about 1 inch apart. Reduce heat to medium-low; place colander in Dutch oven, and cover. Steam 20 minutes. Transfer bao to serving plate; cover to keep warm. Repeat with remaining bao.
Serve bao warm with additional barbeque sauce.