Chocolate Pretzel Bars

2 C pretzel sticks, crushed into crumbs
1 1/2 C (3 sticks) butter, melted
1 1/2 C powdered sugar
1 1/4 C smooth peanut butter, divided
1 1/2 C milk chocolate chips

In a medium bowl, stir together the melted butter, pretzel crumbs, powdered sugar and 1 cup of the peanut butter until well-combined. Press the mixture evenly into the bottom of an ungreased 9x13-inch baking dish, then set aside. Combine the chocolate chips and the remaining 1/4 cup peanut butter in a microwave-safe bowl or measuring cup. Microwave in 30-second intervals, stirring in between, until the chocolate and peanut butter are melted and smooth. Ensure the mixture is well-combined, then spread over the peanut butter-pretzel layer. Refrigerate for at least one hour before cutting into squares. Enjoy!