Combine the milk chocolate chips and the semisweet chocolate chips. Melt half of them in a microwave safe bowl on high power in 20 second intervals, stirring between heat cycles, until smooth.
Drop about a tablespoon of the melted chocolate into 12 paper lined muffin cups, spreading a little bit of the chocolate up the sides. Chill for about 10 minutes, until the chocolate has set.
While chocolate is setting, use an electric mixer, combine the peanut butter, powdered sugar, graham cracker crumbs, butter, vanilla extract and salt until well mixed.
Place about a tablespoon of the peanut butter mixture into the chocolate filled liners, then drop the pan a couple of times to help smooth it out. Chill about 10 minutes to help firm up the peanut butter mixture.
Melt the remaining cup of chocolate chips and spoon another tablespoon full over the top of the peanut butter, carefully spreading it to the edges. Chill about 10 minutes, until fully set.
Notes
Calories are automatically generated. For best results calculate based on your exact ingredients.