In a large mixing bowl, combine the crushed pretzels, creamy peanut butter, melted butter, and powdered sugar. Stir until fully combined and the mixture holds together.

Line an 8x8-inch baking dish with parchment paper. Press the peanut butter mixture evenly into the bottom of the dish, creating a firm layer.

In a microwave-safe bowl, melt the milk chocolate chips in 20-second intervals, stirring between each until smooth. Pour the melted chocolate over the peanut butter-pretzel layer, spreading it evenly with a spatula.

For extra crunch and flavor, sprinkle Reese’s Pieces on top while the chocolate is still warm, gently pressing them in so they stick.

Refrigerate for at least 1 hour, or until the bars are firm. Once set, lift the bars from the dish using the parchment paper and cut into squares.

Enjoy these irresistible, crunchy, sweet, and salty no-bake bars!