Creating Overnight Creme Brulee French Toast is simple when you follow these steps:

1. Prepare the Bread: Cut the brioche or challah bread into thick slices and arrange them in a greased 9×13 inch baking dish in an overlapping pattern.
2. Mix the Egg Mixture: In a large bowl, whisk together the eggs, milk, heavy cream, granulated sugar, vanilla extract, cinnamon, and salt until well combined.
3. Pour Mixture Over Bread: Evenly pour the egg mixture over the bread slices in the baking dish. Ensure every slice is adequately soaked.
4. Cover and Refrigerate: Cover the baking dish with plastic wrap and refrigerate for at least 8 hours or preferably overnight to allow the bread to absorb the custard mixture.
5. Preheat the Oven: When ready to bake, preheat your oven to 350°F (175°C).
6. Sprinkle Brown Sugar: Remove the cover from the baking dish and evenly sprinkle the light brown sugar on top of the soaked bread.
7. Bake: Place the baking dish in the preheated oven and bake for 40-45 minutes or until the top is golden brown and the custard is set.
8. Cool Slightly: Remove from the oven and let cool for about 5 minutes before serving. This slight cooling period helps the dish firm up for easier serving.
9. Brulee the Top (Optional): For a true crème brûlée effect, use a kitchen torch to caramelize the brown sugar topping just before serving, creating a delightful crust.
10. Serve and Enjoy: Slice into portions and serve warm, optionally topped with fresh berries and a drizzle of maple syrup.

Following these clear and straightforward steps, you’ll transform simple ingredients into a show-stopping breakfast!