Line a baking sheet with wax paper or parchment paper. Lightly spray wire cooling rack with non-stick cooking spray. Place sprayed cooling rack over the paper. Set aside. Coarsely chop salted peanuts. Set aside.
Spread peanut butter on flat side of one cracker. Place the second cracker flat side down on top of peanut butter to form a sandwich. Set aside.
Place chocolate in a medium size microwave-safe glass bowl. Microwave chocolate at 30 second increments, stirring after each 30 seconds. Continue this process, stirring often, until all chocolate is melted and creamy.
Drop peanut butter cracker sandwich into melted chocolate. Using a fork or slotted spoon, turn sandwich over, until completely covered with melted chocolate. Transfer to prepared cooling rack. Continue with remaining sandwiches until all coated with chocolate. If necessary re-heat chocolate in microwave, following directions above.
Generously sprinkle chopped salted peanuts on tops of chocolate covered sandwich crackers.
Place baking sheet in the refrigerator until chocolate has set, 30 minutes or so. Remove chocolate covered sandwich crackers in the refrigerator between sheets of wax paper.