French Toast Bake

1/2 cup melted butter (1 stick)
1 cup brown sugar
1 loaf of thickly sliced bread
4 eggs
1 1/2 cup milk
1 teaspoon vanilla
Powdered sugar for sprinkling
Cinnamon for sprinkling

Melt butter in microwave & add brown sugar. ...stir till mixed.  Pour butter/sugar mix into bottom of 9 x 13 pan....spread around. Beat eggs, milk, & vanilla . Lay single slices of bread in pan Spoon 1/2 of egg mixture on bread layer.  Sprinkle some cinnamon over bread/eggs . Add 2nd layer of sliced bread.  Spoon on remaining egg mixture. Cover & chill in fridge overnight. Bake at 350 for 45 minutes (covered for the first 30 minutes). Sprinkle with powdered sugar & cinnamon.  Serve with warm maple syrup