ADAPTED from Smitten Kitchen’s S’more Pie. Unfortunately, the marshmallow layer was a complete disaster (possible theories include a faulty candy thermometer, shoddy Chinese sugar, general ineptness) and I made cotton candy instead, getting sugar fuzz all over my pajamas.
INGREDIENTS: 5 tablespoons salted or unsalted butter, melted, plus additional for greasing, 1 1/2 cups cookie crumbs (I used Digestives), 2 tablespoons sugar, 1/8 teaspoon salt (omitted if you use salted butter), 7 oz fine-quality bittersweet chocolate (I used Trader Joe’s Extra Dark Chocolate because fine quality chocolate is expensive), 1 cup heavy cream, 1 large egg, at room temperature for 30 minutes (I borrowed it from a neighbor).
DIRECTIONS: Put oven rack in middle position and preheat oven to 350°F. Lightly butter pie 9- to 9 1/2-inch pie plate. Stir together all ingredients in a bowl and press evenly on bottom and up side of pie plate. Bake until crisp, 12 to 15 minutes, then cool on a rack to room temperature, about 45 minutes.
Put oven rack in middle position and preheat oven to 350°F. Roughly chop chocolate and place in a large bowl. Bring cream just to a boil in a 1- to 1 1/2-quart heavy saucepan, then pour hot cream over chocolate. Let stand 1 minute, then gently whisk until chocolate is melted and mixture is smooth. Gently whisk in egg and a pinch of salt until combined and pour into graham cracker crumb crust (crust will be about half full).
Cover edge of pie with a pie shield or foil and bake until filling is softly set and trembles slightly in center when gently shaken, about 25 minutes. Cool pie to room temperature on a rack (filling will firm as it cools), about 1 hour.
NOTES: My phone camera is broken so my coworker graciously took a snapshot of the pie before that last piece was devoured by rabid colleagues after our team meeting. They were quite fond of it…even without the marshmallow topping. I had actually brought my handm ixer and packets of sugar to work to make into whipped cream. It rained so I decided not to venture out and buy heavy cream or try to convince the Starbucks to sell it to me. Plus, I had forgotten my wallet.