Crush pretzels and mix in sugar. Add butter and stir until combined.
Firmly press into a 9-inch pie pan. Use the bottom of a glass to smooth and compact the crust.
Refrigerate the crust until set.
Whipped Cream
Refrigerate bowl and whisk (or whisk attachment of your mixer) ten minutes. Add heavy whipping cream and sugar to bowl. Whisk or beat until stiff peaks form Refrigerate.
For the Pie
Whip cream cheese in mixer until smooth. Beat in peanut butter and confectioners sugar, slowly add milk. Blend until smooth.
Carefully fold in whipped cream.
Pour into prepared crust. Garnish as desired.
Refrigerate 2 hours or until firm.
Garnish: pretzels, peanuts, whipped cream
Notes
4 cups UN-CRUSHED pretzels equal approximately 2 cups crushed pretzels.