No-Bake Chocolate Mousse Bars
Ethereal and ready to melt in your mouth, chocolate mousse bars are easy to make and even easier to eat. With so few ingredients, it’s important to use a chocolate you would be perfectly happy to snack out of hand. The instant espresso powder is optional but adds depth to this simple dessert. To cut beautiful, neat slices, use a long sharp knife warmed in hot water and wiped clean before each cut.
- Serves: 24 persons
- 18whole graham crackers (about 9 1/2 ounces/269 grams)
- 8tablespoons/113 grams unsalted butter (1 stick), melted
- 2tablespoons granulated sugar
- ¼teaspoon kosher salt
- 1pound/454 grams semisweet chocolate, finely chopped
- 3cups cold heavy cream, plus more for serving
- 2teaspoons instant espresso powder
- ½teaspoon kosher salt
- 1tablespoon pure vanilla extract
- Whipped cream (optional)
Step 1Make the crust: Line a 9-inch-by-13-inch baking pan with parchment paper, leaving a 2-inch overhang on 2 sides. In a food processor, or in a resealable plastic bag, crush the graham crackers until you have fine crumbs (but stop before you have dust). You should have about 2 1/4 cups. Transfer the crumbs to a medium bowl. Add the butter, sugar and salt and stir until evenly moistened. Tip the crumbs into the prepared pan and press them down into an even layer on the bottom. Transfer to the freezer while you prepare the filling.
Step 2Make the filling: Set the chocolate in a medium bowl. In a small saucepan, heat 1 cup cream, espresso powder and salt until hot but not boiling. Pour the hot cream mixture over the chocolate and let it stand for 2 minutes. Add the vanilla and whisk until smooth. Set aside to cool completely.
Step 3In a large bowl or in the bowl of a stand mixer fitted with the whisk attachment, whip the remaining 2 cups heavy cream until you have stiff peaks. Add the chocolate mixture and gently fold to combine. Pour the mixture over the prepared crust, and spread it out into an even layer. Cover with plastic wrap and chill until firm, at least 2 hours. To serve, cut the two edges without parchment free with a sharp knife then use the parchment overhang to transfer the bar to a cutting board. Cut into squares and serve with a dollop of whipped cream, if desired.