01 - Preheat oven to 350°F. Coat a standard 12-cup muffin tin thoroughly with butter or nonstick spray.
02 - Distribute the cubed bread evenly among the muffin cups, filling each approximately three-quarters full.
03 - In a large mixing bowl, whisk together eggs, milk, heavy cream, granulated sugar, vanilla extract, cinnamon, and salt until smooth and fully blended.
04 - Pour the prepared custard mixture evenly over the bread cubes in each muffin cup, gently pressing down so the bread absorbs the liquid.
05 - Let the muffin tin rest for 10 minutes to ensure bread soaks up the custard thoroughly.
06 - Scatter fresh berries on top of each cup if desired.
07 - Place muffin tin in oven and bake for 25 minutes, or until tops are golden brown and centers are set.
08 - Remove from oven and allow to cool for 5 minutes before loosening cups from the pan.
09 - Serve warm, finished with a dusting of powdered sugar and a drizzle of maple syrup.