Instructions:
- Prepare Caramel Base
In a small saucepan over medium heat, melt butter. Add brown sugar and corn syrup, stirring until smooth. Pour this mixture into a 9×13-inch baking dish. - Layer the Bread
Arrange the sliced bread evenly over the caramel base in the baking dish. Trim slices to fit if needed. - Make the Custard
In a large bowl, whisk together eggs, milk, half-and-half, vanilla, salt, and liqueur (if using). Pour the custard over the bread slices, pressing down gently so the bread absorbs it. - Chill
Cover the dish with plastic wrap and refrigerate for at least 8 hours or overnight. - Bake
Preheat the oven to 350°F (175°C). Remove the plastic wrap and let the dish come to room temperature. Bake for 35-40 minutes, or until golden and puffed. Let cool slightly. - Caramelize (Optional)
For an extra touch, sprinkle granulated sugar on top and use a kitchen torch to caramelize until crisp and golden.
Tips:
- For a seasonal twist, add cinnamon and nutmeg to the custard.
- For variety, try layering sliced apples or pears between the bread slices.
- Reduce sugar and butter for a less sweet version, or use whole grain bread for added texture.