Place a large roasting pan in oven. Preheat oven and pan to 450°.
Combine first 7 ingredients in a small bowl.
Coat cut sides of cabbage with cooking spray. Place cabbage, cut sides down, on preheated pan; bake 6 minutes. Turn cabbage onto other cut side; bake an additional 6 minutes. Remove pan from oven. Heat broiler to high. Brush cabbage evenly with oil mixture; broil 3 minutes or until browned and caramelized.