1 stick butter, softened at room temperature
3/4 c. sugar
2 eggs
1 1/2 tsp. vanilla
1 Hershey bar
1 square Baker's unsweetened chocolate

Cream soft butter with sugar. Add eggs, one at a time, beat with mixer. Add vanilla and be sure to mix well. Add melted chocolate to mixture and beat well. Put in refrigerator and let chill 2 hours. Top with Cool Whip and crushed Heath bars.