2 pkg. (4 serving size) chocolate flavor pudding & pie filling (NOT INSTANT)
3 1/2 c. milk
2 tbsp. butter
1/3 c. chocolate chips
1 (9 inch) chocolate pie shell

Combine pie filling mix, milk, butter and chocolate chips in saucepan. Cook and stir over medium heat until mixture comes to a full boil. Remove from heat. Let stand 5 minutes stirring twice while cooling. Pour into pie shell. Refrigerate 3 hours. Garnish with Cool Whip.