For the crust you will need graham crackers and melted butter. To make the filling you will need lime juice, heavy cream, and sweetened condensed milk.
Crush the graham crackers into crumbs and mix with melted butter. Press into a pie pan and refrigerate.
In a medium bowl, use an electric mixer or a stand mixer, to whip the cream until it is light and fluffy and begins to form stiff peaks.
Pour the pie filling into the prepared graham cracker pie crust and smooth the top with an angled spatula.