1 c. soft butter
1 1/2 c. sugar
2 squares chocolate, melted
2 tsp. vanilla
4 eggs

Cream butter and sugar until fluffy. Add 2 eggs, melted chocolate and vanilla to the butter and sugar mixture. Beat 5 minutes. Then add remaining 2 eggs. Beat five more minutes. Pour into graham cracker crust or meringue shell. Refrigerate.