Creating mouthwatering Hawaiian Roll French Toast is straightforward. Follow these steps:

1. Preheat the Griddle: Preheat your griddle or skillet over medium heat. Lightly grease it with cooking spray or a small amount of butter.
2. Prepare the Egg Mixture: In a large mixing bowl, whisk together the eggs, milk, vanilla extract, ground cinnamon, and granulated sugar (if using) until well combined.
3. Dip the Rolls: Take each slice of Hawaiian roll and dip it into the egg mixture, allowing it to soak for about 10 seconds on each side. Ensure it is coated well but not overly soggy.
4. Cook the Toast: Place the soaked rolls onto the preheated griddle. Cook for about 3-4 minutes on each side, or until golden brown and crispy.
5. Add Butter: If desired, add a small pat of butter to the griddle for enhanced flavor as you cook. This step ensures a deliciously rich crust.
6. Keep Warm: Once cooked, transfer the French toast to a warm plate or keep them in a low oven (around 200°F or 93°C) while you finish cooking the remaining slices.
7. Repeat: Continue this process until all the Hawaiian rolls are cooked and ready to serve.
8. Serve Immediately: Drizzle the warm French toast with maple syrup and garnish with powdered sugar, whipped cream, and fresh fruits if desired.

These simple steps will guide you through creating the most luscious Hawaiian Roll French Toast that your taste buds will ever encounter.