Heat oven to 350 degrees F. In large mixer bowl, combine cream cheese and sugar - beat well. Blend in cocoa, scraping sides of bowl and beater frequently. Add eggs and vanilla - blend well. Blend in whipping cream. Pour into crust. Bake 35 to 40 minutes - center will be soft but will set upon cooling. Cool to room temperature. Cover and chill several hours or overnight. Garnish with pie filling. Makes 6 to 8 servings.