1
In a medium bowl, mix graham cracker crumbs, powdered sugar, melted unsalted butter, vanilla, salt, and 1 cup creamy peanut butter until smooth and well blended.
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2
Press the mixture evenly into the bottom of a 9×13-inch pan.
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3
Place semisweet chocolate chips and 1/4 cup peanut butter in a microwave-safe bowl. Microwave on high in 15-second bursts, stirring between each, until smooth.
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