1. Preheat oven to 350°.
2. Roll dough out to a 24-inch rope; cut dough into 2 (12-inch) ropes. Place dough on a parchment-lined baking sheet. Bake at 350° for 25 minutes or until golden; cool completely on a wire rack. Cut bread into 4 (6-inch-long) pieces; split each piece crosswise.
3. Preheat broiler to high.
4. Open each bread portion flat. Spread 2 tablespoons sauce over each bread portion; divide Canadian bacon evenly among servings. Sprinkle bacon with cheese; top with pineapple. Broil 3 minutes or until golden. Garnish with green onions, if desired. Fold top half of bread over cheese mixture.