Ingredients:
- 3 cups heavy whipping cream, cold
- 10 oz semi-sweet chocolate, chopped
- 1/2 cup powdered sugar
- 1 tsp vanilla extract
- 1 package (approx. 12 oz/350g) chocolate wafer cookies, filling removed if using sandwich cookies
- 1/4 cup unsweetened cocoa powder (for dusting and blending)
- 1 tsp espresso powder (optional, for flavor boost)
Instructions:
- Prepare the Stabilizer: Gently melt the semi-sweet chocolate in a double boiler or microwave safe bowl using 30-second intervals until smooth. Let the melted chocolate cool slightly until it is warm, not hot (this prevents melting the whipped cream).
- Whip the Cream: In a large, chilled mixing bowl, whip the cold heavy cream, powdered sugar, vanilla extract, and espresso powder (if using) using an electric mixer until medium-soft peaks form.
- Fold the Mousse: Slowly drizzle the slightly cooled melted chocolate into the whipped cream while gently folding with a spatula until fully combined and stabilized into a rich, uniform chocolate mousse. Ensure you do not overmix, which can deflate the cream.
- Layering Setup: Choose a 9x5 inch loaf pan or an 8x8 inch square pan (for thicker slices). Spread a thin layer of the chocolate mousse on the bottom of the pan.
- Layer Wafers: Arrange a single layer of chocolate wafers tightly over the mousse layer. Top with approximately one-fifth of the remaining mousse, ensuring all wafers are completely covered.
- Repeat: Continue layering wafers and mousse (about 4-5 layers total) until all ingredients are used, ensuring the final, top layer is a thick, even coat of chocolate mousse.
- Chill: Cover the pan tightly with plastic wrap, pressing it gently onto the surface of the mousse to prevent freezer burn or crusting. Refrigerate for a minimum of 4 hours, or ideally 8 to 12 hours, allowing the wafers to soften and the cake structure to set completely.
- Serve: Before serving, remove the plastic wrap and dust the top surface liberally with unsweetened cocoa powder. Slice and serve cold.