Preheat your oven to 175°C (350°F).
Crush the graham crackers into fine crumbs. You can use a food processor or place them in a bag and crush with a rolling pin.
Finely chop the walnuts and add them to the graham cracker crumbs.
Melt the butter and mix it with the graham cracker crumbs, walnuts, and sugar until well combined.
Press the mixture evenly into the bottom of a 23 cm (9-inch) springform pan.
Bake the crust for 8-10 minutes. Let it cool slightly while you prepare the filling.