To make the crust crush up 2 ½ cups of Glutino Pretzels, then in a medium-large bowl, mix together with the softened butter and brown sugar. Using an 8 or 9 inch pie plate, press the mixture evenly into the pan. Preheat the oven to 350°F and then bake for 7-9 minutes.
Remove the pie crust and allow to cool. While the pie crust is cooling off, in a medium-large bowl mix together the peanut butter, cream cheese, and brown sugar. Combine these ingredients using an electric mixer on a medium setting to remove any clumps. After the ingredients are have mixed together add in heavy cream and vanilla extract and mix together on a medium-high setting.
After the pie crust has cooled, spread the filling evenly into the crust. We decided to drizzle some chocolate sauce on top of the pie to give it a lattice look and a little chocolate flavor, but this is completely optional. After you have added the filling be sure to put the pie into the fridge until you are ready to head out to your party!