1 9" baked pie crust, or crumb Crust
1 Envelope unflavored gelatin
1 2/3 c Milk, divided
2/3 c Sugar
1/3 c Hershey's cocoa
2 tb Butter or margarine
3/4 ts Vanilla
1/2 c Chilled whipping cream

In medium saucepan sprinkle gelatin over 1 c. milk; allow to stand 2 minutes to soften. Stir together sugar and cocoa; add to mixture in saucepan. Cook over low heat, stirring constantly until mixture boils. Remove from heat; add butter, stirring until melted. Blend in remaining 2/3 c. milk and vanilla. Cool; chill, stirring occassionally, until mixture begins to set. Beat whippping cream until stiff; carefully fold into chocolate mixture.