Preheat oven to 350°F (175°C).
Crush chocolate graham crackers into fine crumbs using a food processor or rolling pin.
Mix crumbs with melted butter and sugar until evenly coated.
Press the mixture into a 9-inch pie dish and bake for 8–10 minutes. Let cool.
Chop dark chocolate into small pieces and place in a heatproof bowl.
Heat cream in a saucepan until bubbles form around the edges (do not boil).
Pour hot cream over chocolate and let sit for 2 minutes.
Stir until smooth, then add butter and vanilla extract. Mix until glossy.
Let ganache cool for 10 minutes, then pour into crust. Cover and chill for 3 hours.
Wash and hull strawberries.
Whip cream, powdered sugar, and vanilla until soft peaks form.
Spread whipped cream evenly over chilled pie.
Arrange strawberries on top before serving.