• 1 homemade pie crust (visit site for link)• 8 oz bittersweet chocolate finely chopped (236g)• ½ cup unsalted butter cut into 8 pieces (113g)• 4 large eggs• ¾ cup granulated sugar (150g)• ½ teaspoon salt• 2 teaspoons vanilla extract• ¼ teaspoon espresso powder optional, but recommended• 1 cup heavy cream (236ml)• Homemade whipped cream, for topping (optional but recommended!)
Place chopped chocolate and butter pieces in a microwave-safe bowl and heat in 20-second intervals, stirring well in between, until chocolate is completely melted and smooth.
You will need a double boiler for this recipe or a medium-sized saucepan and a heatproof mixing bowl that can rest on the pot. Fill 2” of water and bring the water to a simmer.
Continue to whisk constantly until sugar has dissolved (if you rub a small bit between your fingers, it should feel smooth/without grit) and mixture reaches 160F (71C).
Carefully remove bowl from heat and use an electric mixer to beat until the mixture is lightened in color and increased in volume and the ribbon that falls off the beater holds its shape.
Add espresso powder and vanilla extract then increase mixer speed to high and beat for another 30 seconds. Allow mixture to cool to room temperature, stirring occasionally.