Adapted from Have Cake, Will Travel.
1 cup semi-sweet chocolate chips
1/2 cup peanut butter plus 2 tablespoons
1/4 cup powdered sugar
1/2 teaspoon vanilla extract
In the microwave, melt 3/4 cup of the chocolate chips. Stir in the 2 tablespoons of peanut butter until smooth. Line a muffin tin with six liners. Spoon a bit of the melted chocolate into each, using a spoon to brush up the sides. Place tin in fridge for the chocolate to harden. In a small bowl, mix the remaining peanut butter with the powdered sugar, vanilla extract and salt, kneading to fully incorporate. Divide into six pieces. When the chocolate in the muffin tins has hardened, put a piece of peanut butter mixture in each and gently press into place. Add the remaing chocolate chips to those previously melted and use microwave to melt again, stirring to smooth. Spoon the remaining melted chocolate on top of each candy, spooning to edges to cover the peanut butter layer. Return to fridge to harden.