"Ben Rayl authors the blog Comfortable Food, which he began in 2012. He moved to Europe in 2008 after a long career in the restaurant industry, and currently lives in Copenhagen, Denmark. For new recipe updates, be sure to follow Comfortable Food on Facebook.
In a heatproof bowl over boiling water, melt the butter and 1½ cups peanut butter together, stirring until smooth. Remove from heat, stir in the vanilla and set aside, allowing to cool for about 10 minutes.
In a large bowl, mix together the graham crackers, powdered sugar, salt and chocolate chips. Stir in the peanut butter mixture and mix well to combine.
Spray the bottom of a 9x13" pan, then spread the peanut butter mixture evenly in the bottom and set aside.
To make the chocolate layer:
Use a heatproof bowl over boiling water and melt the 1½ cups chocolate chips and peanut butter together, stirring well to combine.
Pour the melted chocolate over the peanut butter layer, tilting the pan to cover evenly.
Let cool for about 5 minutes, then sprinkle over the chopped peanuts.
Chill in the fridge for about 30 minutes, or until the chocolate has set, then cut into bars and serve.