1. Make the cookie crust: In a medium bowl, combine the crushed chocolate sandwich cookies and melted butter. Press the mixture into the bottom of a 9×13-inch baking dish.
2. Make the peanut butter filling: In a large bowl, beat together the peanut butter, softened butter, and sweetened condensed milk until smooth and creamy. Spread the filling over the cookie crust.
3. Sprinkle with Reese’s Pieces: Sprinkle the Reese’s Pieces candy evenly over the peanut butter filling.
4. Make the whipped cream topping: In a large bowl, beat the heavy cream, powdered sugar, and vanilla extract until stiff peaks form. Spread the whipped cream topping over the Reese’s Pieces layer.
5. Refrigerate: Cover and refrigerate the icebox cake for at least 4 hours, or overnight, before serving.
6. Enjoy: Cut into squares and enjoy your delicious Reese’s Pieces Icebox Cake
