This recipe adds cream cheese and white chocolate to add flavor, sweetness, and stability! The white chocolate flavor does not come through very strongly, but it is essential for the texture and sweetness of this cream. Start by heating the white chocolate and heavy cream together in 30 second intervals in the microwave, stirring between each interval. When it is completely melted and smooth, stir in the room temperature cream cheese. If it is not room temperature, it will not incorporate properly. Then, chill the mixture in the fridge for 2-3 hours. Once chilled, whisk the mixture until it's thick and forms stiff peaks. Then, assemble the tarts as directed.