Preheat oven to 350°F. Combine crushed cookies, butter, and sugar in medium bowl. Press into 9-inch pie plate. Bake until set, 7 to 10 minutes. Remove from oven and cool crust completely.1

Using an electric mixer, bowl and whisk attachment, whip cream on medium-high speed until stiff peaks form. Transfer to another bowl. 2

Using the electric mixer and bowl, add cream cheese and beat until fluffy, about 5 minutes, scraping as needed.  Add Irish cream, powdered sugar, vanilla, and salt.  Beat for an additional 1 to 2 minutes, or until very light and fluffy.3

Add 1/3 of the whipped cream and fold by hand into cream cheese mixture. Carefully fold in remaining whipped cream. Fold in chocolate chips, reserving some to sprinkle on for decoration.4

Spread filling evenly into cooled crust. Garnish with reserved chocolate chips. Cover with plastic wrap and chill for at least 4 hours before serving.