Prepare brownies according to package.
Whisk milk and pudding, mix 2 minutes while brownies are cooling.
Add peanut butter and sugar; mix well. Cover and refrigerate pudding mixture until brownies are completely cooled.
Spread pudding mixture over brownies.
Microwave whipped topping and chocolate on HIGH 1 minute, stirring every 30 seconds. Spread over pudding; sprinkle with nuts. Refrigerate 1 hour.
Go to full version of