Preheat oven to 375. Place brown sugar into 13 x 8 inch baking dish. Melt butter or margarine in microwave. Blend brown sugar, melted butter and 2 tablespoons flavoring until its makes a glaze in bottom of baking dish. Whisk eggs, milk and remaining flavoring in a shallow bowl until well blended. Dip each bread slice into egg mixture, soaking both sides. Set bread on top of brown sugar mixture in baking dish. Sprinkle evenly with cinnamon to taste. (At this point you can refrigerate or freeze). Bake 20-25 minutes or until golden brown. Flip each slice of bread over so glazed side is up. Serve hot. Serves 6.