Ingredients:1/2 cup salted butter, melted3/4 cup powdered sugar1/4 cup brown sugar1 cup crushed graham crackers1 cup creamy peanut butterTopping:3/4 cup semi-sweet chocolate chips1/4 cup plus 2 tablespoons creamy peanut butter, dividedMethod:Line an 8x8 baking pan with aluminum foil or parchment paper and spray with non-stick cooking spray.In a medium microwave-safe bowl, melt the butter. Using a rubber spatula, mix in the powdered and brown sugars. Stir in the graham cracker crumbs and then the creamy peanut butter mix until smooth and thoroughly combined.Spread the batter in an even layer in the prepared baking pan. Set aside.In another bowl, melt the chocolate chips with 2 tablespoons creamy peanut butter in the microwave in 30-second increments. Stir after each interval until smooth. Spread the chocolate over the peanut butter bars.Heat the remaining peanut butter in the microwave for 20-30 seconds (it helps with the pouring). Drizzle the peanut butter over the chocolate, creating 5-6 straight lines. Rotate the pan 90 degrees and using a toothpick, drag it through the lines in both directions to create the pattern.Cover the pan with plastic wrap and refrigerate for at least 2 hours before cutting.Cooks Note:The bars will keep up to 2 weeks in the fridge.