Combine pudding mix, brown sugar, chocolate and ¼ c. milk in saucepan. Add egg yolks and blend well. Then add remaining 1 ¾ c. milk. Cook over medium heat, stirring constantly, until mixture comes to a boil.
Remove from heat and stir in butter. Cool at least 5 minutes, stirring two or three times.
Scatter peanuts in cool pie shell. Pour on chocolate mix