Grease a 9x13 inch pan; set aside.
In a medium saucepan heat brown sugar and butter over medium heat until sugar dissolves, stirring constantly. Cool slightly.
Stir in eggs, one at a time, and vanilla.
Stir in flour, baking powder, and baking soda.
Spread batter in prepared pan. Sprinkle with white chocolate, graham crackers, and marshmallows.
Bake at 350 for 30 minutes or until done.
Remove from oven and drizzle with cinnamon glaze.