01 - Preheat oven to 350°F. Lightly grease a 12-cup muffin tin with butter or nonstick spray.
02 - Divide the cubed bread evenly among muffin cups, filling each cup about three-quarters full.
03 - In a mixing bowl, whisk together eggs, whole milk, heavy cream, granulated sugar, vanilla extract, ground cinnamon, and salt until fully combined.
04 - Pour the custard mixture evenly over the bread cubes in each muffin cup, gently pressing the bread to help it soak up the liquid.
05 - Allow the filled muffin tin to sit for 10 minutes to let the bread absorb the custard.
06 - Top each cup with fresh berries if desired.
07 - Bake for 25 minutes, or until the tops are golden brown and the centers have set.
08 - Let cool for 5 minutes, then carefully loosen and remove each French toast cup from the tin.
09 - Serve warm, dusted with powdered sugar and drizzled with maple syrup.