01 - Preheat oven to 350°F (175°C). Grease a standard 12-cup muffin tin thoroughly using butter or nonstick spray.
02 - Divide the bread cubes evenly among the muffin cups, filling each compartment approximately three-quarters full.
03 - In a large mixing bowl, whisk together eggs, whole milk, heavy cream, granulated sugar, vanilla extract, ground cinnamon, and salt until the mixture is completely blended.
04 - Pour the custard mixture evenly over the bread cubes in each muffin cup, gently pressing the bread with a spoon to encourage absorption of the liquid.
05 - Allow the muffin tin to rest for 10 minutes to let the bread absorb the custard mixture.
06 - Distribute fresh berries over each cup as desired.
07 - Bake for 25 minutes or until the tops are golden brown and the centers are set.
08 - Remove from the oven and let the baked cups cool in the pan for 5 minutes before carefully releasing each French toast cup.
09 - Serve the French toast cups warm, dusted with powdered sugar and drizzled with maple syrup.