In a mixing bowl, combine graham cracker crumbs with melted unsalted butter until well blended. Press this mixture into the bottom of a trifle dish, creating an even layer.

In a chilled mixing bowl, whip heavy whipping cream on medium-high speed until stiff peaks form, about 3-5 minutes.

Beat softened cream cheese until creamy. Gradually add powdered sugar, lime juice, lime zest, and vanilla extract, mixing until smooth.

Gently fold the whipped cream into the cream cheese filling using a spatula until combined.

Spoon half of the lime mixture over the crust, spread evenly, and sprinkle with extra graham cracker crumbs. Repeat layering.

Garnish with additional lime zest and cover with plastic wrap. Chill in the refrigerator for at least 120 minutes, or overnight for best flavor.