Step 1

Grease a 9 inch pie pan.

Step 2

In a medium sized bowl, add melted butter to cookie crumbs and mix until combined.

Step 3

Press cookie mixture evenly into the bottom and up the sides of the pie pan, then set aside.

Step 4

Place 1 1/2 cups of heavy whipping cream into a large mixer bowl and whip on high until it begins to thicken.

Step 5

Add powdered sugar and vanilla extract and continue whipping until stiff peaks form. Set whipped cream aside.

Step 6

Place chocolate pieces, remaining 1/2 cup of heavy cream and butter into a microwave safe bowl or measuring cup. Heavy cream should mostly cover the chocolate chips.

Step 7

Microwave mixture until cream begins to boil, about 1-2 minutes.

Step 8

Whisk mixture until chocolate is completely melted.

Step 9

Add mascarpone cheese to chocolate and stir until smooth.

Step 10

Fold half of the whipped cream into the chocolate mixture.

Step 11

Spread chocolate mixture evenly into pie crust.

Step 12

Top pie with remaining whipped cream and chocolate shavings, if desired.