This is one of those convenience-food recipes that I found on some package 100 years ago, probably on the cream cheese box. I don't remember the published name, but remember that I didn't like think it was descriptive, so at some point I renamed it.
Make no mistake, it's not like a cooked cheesecake, but has a sturdier texture than your typical pie.
No-Bake Chocolate Cheesecake
16 oz. cream cheese, softened
4 squares semi-sweet baking chocolate, melted
1/3 cup sugar
8 oz. Cool Whip
1 chocolate crumb pie crust
With an electric mixer, blend together softened cream cheese, chocolate, and sugar. Gently stir in Cool Whip. Spoon into crust. Refrigerate 3 hours or overnight. Serve with additional Cool Whip if desired.