Combine all filling ingredients into a bowl and mix well. Set aside.
Flatten bread slices with rolling pin and spread 1 tablespoon filling over each bread slice, to 1/2 inch from sides and to 1 inch at top.
Roll up bread slices, starting from bottom.
Place milk, eggs and cinnamon in shallow bowl and whisk until combined.
Melt 1 tablespoon of butter in a skillet over medium heat until sizzling.
Dip 4 bread rolls into egg mixture, then place in skillet.
Cook, turning occasionally, for 3 minutes or until lightly browned on all sides.
Repeat with remaining butter and bread rolls; wiping out skillet between batches.
Sprinkle with powdered sugar, if desired, and enjoy!