01 -
In a pot, soften the butter, then stir in brown sugar and corn syrup until smooth. Spread this mixture across a greased 9×13-inch pan.
02 -
Take the thick brioche or challah slices and evenly layer them on top of the caramel base.
03 -
Mix up the eggs, half-and-half, vanilla, cinnamon, and salt in a bowl. Pour this custard all over the bread layers, making sure it soaks through.
04 -
Use plastic wrap to cover the pan tightly, then let it chill in the fridge for at least 8 hours or overnight.
05 -
Turn your oven on to 350°F (175°C). Take off the wrap, and bake the dish uncovered for about 35-40 minutes, until it turns golden brown and is firm.
06 -
Scatter sugar across the cooked French toast and melt it with a torch or under the broiler until it's crisp and golden.
07 -
Cut into portions and serve while warm. Add extras like maple syrup, whipped cream, berries, or powdered sugar if you like.