Preheat the oven to 425 degrees. \nUsing a sharp knife, carefully slice the cabbage from top to bottom into rounds, about ¾ - 1 inch thick. Place the sliced cabbage in a single layer on a rimmed baking sheet \nBrush all over each cabbage steak with Hong Kong sauce. Transfer to the oven and roast until tender and beginning to brown, about 22-25 minutes. \nMeanwhile, as your cabbage roasts, whisk the mayo with 3 Tablespoons Hong Kong sauce. \nRemove cabbage from the oven and let cool slightly. Drizzle with creamy Hong Kong mayo and top with fresh parsley and New York everything crunch.