French Toast Bake (Texas Toast)

1/2 cup melted butter or margarine
1 cup brown sugar
1 loaf Texas toast
4 eggs
1 1/2 cups milk
1 tsp. vanilla
powdered sugar for sprinkling

Melt butter in microwave and add brown sugar, stir until mixed.  Pour butter/sugar mix into bottom of 9x13 pan, spread around.  Beat eggs, milk and vanilla.  Lay single layer of Texas Toast in pan.  Spoon 1/2 of egg mixture on bread layer.  Add 2nd layer of Texas Toast, spoon on remaining egg mixture.  Cover and chill in fridge overnight.  Bake at 350 for 45 minutes.  Sprinkle with powdered sugar.  Serve with maple syrup if desired.