Arrange the slices in a buttered dish, fitting them snugly
Mix milk with eggs, vanilla and lemon zest
Add sugar and integrate everything well
Pour over the panettone slices, making sure they're all moistened
Let stand 20-30 minutes, checking once or twice that all pieces of bread are soaked
Sprinkle with cinnamon sugar and bake as directed
A tester should come out clean but don't overbake it so it stays creamy
Serve it warm with whipped cream ⭐️