The peanut butter portion of these bars is almost cookie-like, thanks to the addition of graham cracker crumbs to the batter. If you're short on time, buy graham cracker crumbs and chopped peanuts already prepared from the grocery store.
Line a 12x8 or 13x9-inch dish with parchment paper with two sides overhanging, or butter the pan generously.
In a 2 quart microwave-safe mixing bowl, combine the butter and peanut butter. Microwave at full power for 2 to 2 1/2 minutes, or until melted. Blend together. Mix in crumbs, peanuts and sugar until the mixture is stiff. Press firmly into the prepared pan.
In a small bowl, combine chips, and shortening. Microwave at full power at 30 second intervals, until the chips and shortening are melted and can be stirred smooth. Pour over the peanut layer and smooth the chocolate evenly with an off-set spatula. Refrigerate until set, about 40 minutes.
Lift the candy from the pan by the two overhanging parchment edges. Sprinkle the chocolate with two or three pinches of Maldon flake salt, if using. Cut the bars into pieces and store in a container that seals air-tight.
Stove-top directions: If you don't have a microwave, then this candy may be prepared on the stove-top instead. Melt the butter and peanut butter in a small saucepan over medium heat until smooth. Melt the chocolate chips and shortening in a small saucepan over medium-low until smooth.
Keyword confectioners' sugar, creamy peanut butter, dipped graham crackers