01 - Preheat oven to 350°F. Grease a 9x13-inch baking dish.
02 - Open cinnamon roll cans and set aside the icing. Cut each roll into quarters and scatter pieces evenly in the prepared dish.
03 - Whisk eggs, whole milk, heavy cream, vanilla extract, ground cinnamon, granulated sugar, and salt together in a medium bowl until smooth.
04 - Pour custard mixture evenly over cinnamon roll pieces, pressing lightly to coat each piece.
05 - Drizzle melted butter and maple syrup evenly on top.
06 - Bake for 30 to 35 minutes until puffed, golden, and a center-inserted knife comes out clean.
07 - Allow to rest 10 minutes before drizzling with reserved icing. Serve warm.