Heat cream in a microwave safe bowl and microwave for one minute at 30 second intervals. Alternatively, you can do this on the stovetop in a double boiler.
Add the chocolate chunks and let them sit in the cream for 30 seconds. Then, stir until smooth. If the chocolate is not fully melted, microwave at 15 second intervals.
Add the creamy peanut butter and stir gently into the ganache.
Pour on top of the cooled crust and top with sea salt.
Refrigerate the bars for an hour to set and serve.