Melt chunks and butter together in a large bowl in the microwave; add the remaining ingredients and mix well.
Pour mixture into the prebaked crust and bake 30 minutes in a preheated 350 degree oven.
Don't over cook. Serve warm.
Top with real whipped cream and if you want to make it sinfully rich top with ice cream, toasted pecans, caramel sauce and whipped cream - oh yeah, it's a Valentine for the chocolate lover in your life.