Holiday Morning French Toast

1 cup brown sugar
½ cup melted butter
3 tsp cinnamon, divided
3 tart apples (Granny Smith)
1 loaf French bread, cut into 1” slices
6 eggs
1-½ cups milk
1 Tbsp vanilla
*Combine brown sugar, butter and 1 tsp cinnamon in 9x13” pan. Add apples, sliced thin. Toss to coat. Spread in baking dish and arrange bread on top. Mix eggs, milk, vanilla and 2 tsp cinnamon. Pour over bread. Refrigerate overnight, covered with foil. Next morning, bake at 375˚ covered with foil for 40 minutes. Uncover and bake 15 minutes more. Let stand 5 minutes before serving.