4 tablespoons butter
1/2 cup dark brown sugar
8-12 1" thick slices of your favorite bread (french, brioche, cinnamon raisin, whatever)
4 large eggs
1 cup of whole milk
1/2 teaspoon pure vanilla (optional or whatever flavor you want)
1/2 cassia cinnamon (I use Vietnamese Cassia from Penzeys)
Preheat oven to 450F.
Spread the butter on the bottom of a large baking dish (9x15x2). Spread the sugar evenly on top of the butter. Place bread slices on top until the dish is filled.
Whisk together the rest of the ingredients in a bown and pour evenly over the bread. Let stand about 15-30 minutes to allow the bread to soak all of the egg-based mixture.
Bake for 10-15 minutes depending on how "done" you want the french toast.
Serve with fresh fruit and whipped heavy cream.