Some might say this more like a bread pudding than a French toast casserole. I say it's a warm and delicious start to a morning or a sweet way to end a meal.
Melt the butter and pour coat the bottom of a 13x9x2 pan. Then sprinkle the bottom with the brown sugar.
Tear apart the bread and place 1/2 of it on top of the butter and sugar base. Then add a layer of sliced bananas. Sprinkle liberally with cinnamon and add a final layer of bread. Top off with a little more cinnamon.
In a separate bowl mix the eggs, vanilla and milk. Then pour over the bread mixture. Let the mixture sit and soak into the bread for about 15 minutes.
Bake uncovered in a 350 oven for 50 - 55 minutes or until the center seems firm. Remove from oven and cool for 10 minutes before serving.