01 -
Line a 9x13-inch baking pan with parchment paper, leaving enough overhang to lift the bark out of the pan.
02 -
In a medium bowl, melt 8 ounces of white chocolate with 1/2 teaspoon oil in the microwave, stirring every 20 seconds until smooth.
03 -
Pour the melted chocolate into the prepared pan and spread evenly. Chill in the fridge for 10-15 minutes.
04 -
In another bowl, beat peanut butter and butter until creamy. Add confectioners' sugar, vanilla, and salt, mixing until combined.
05 -
Spoon dollops of peanut butter mixture over the first chocolate layer, spreading evenly. Chill while melting the remaining chocolate.
06 -
Melt the remaining chocolate with oil, then pour over the peanut butter layer. Top with chopped Reese's Pieces.
07 -
Chill in the fridge for 30-60 minutes until set. Use the parchment to lift the bark from the pan and cut into pieces.
08 -
Store in the fridge for up to 1 week or freeze for up to 3 months.