In a medium bowl, mix crushed cookies and 1/2 cup melted butter. Press mixture firmly in a pie pan.
Pull ice cream out of the freezer for 5-10 minutes to soften (if the box has already been opened, but may take a minute or two longer to soften than an unopened box).
Spoon softened ice cream evenly over the cookie crust. Freeze for about 2 hours or until firm.
Make the chocolate sauce:
In a small saucepan, melt ¼ cup butter and 2 squares (2 oz) chocolate over low heat, stirring constantly. Stir in sugar; gradually stir in ½ can of evaporated milk.
Heat to boiling over medium-high heat, stirring constantly for 5 minutes or until slightly thickened; stir in vanilla. Cool completely, about 2 hours.
TIP: Optional to use a jar of fudge (like Trader Joe’s fudge), softened in the microwave, but not hot (to melt the ice cream).
Assemble the pie:
Pull the frozen pie out of the freezer. Spread 1 cup of the chocolate sauce evenly over the frozen ice cream pie. [Cover and refrigerate remaining sauce for another use or for drizzling*]
Place pie back in the freezer and freeze for at least 6 hours but no longer than 2 weeks.
To serve:
Whip the cream until stiff; add in the powdered sugar and vanilla. Gently mix together.
Spread over the pie when ready to serve.
Top whipped cream with chopped peppermint pieces and mini chocolate chips.
Cut and serve!
*Optional to reheat the remaining sauce and drizzle over each serving.