Spread the other four slices with the jam and blueberries. Combine one slice of bread with the cream cheese mixture with one slice with the blueberry mixture.
In a small bowl combine the egg, milk and vanilla for the french toast dip. Heat a waffle maker according to the manufactures directions, spray lightly with cooking oil if needed.
Working quickly dip each sandwich into the french toast dip mixture--Be sure to coat each side well! Place dipped sandwich into waffle maker and cook according to the directions.