Prepare the custard mixture by whisking together eggs, milk, vanilla extract, cinnamon, salt, and nutmeg until smooth.
Preheat the skillet over medium heat, adding butter to coat the surface.
Soak halved Hawaiian rolls in the custard mixture for about 10 seconds per side.
Cook soaked rolls in the skillet for 2-3 minutes until golden brown.
Flip the rolls and cook for another 2-3 minutes until both sides are golden.
Keep cooked rolls warm and repeat the cooking process with remaining rolls.
Serve warm with powdered sugar and maple syrup on the side.
