Bolo de Bolacha is a classic Portuguese dessert made with layers of coffee-soaked biscuits and a creamy mixture of condensed milk and butter. Using a food processor can help in the preparation of the creamy filling. Start by pulsing condensed milk, butter, and coffee in the food processor until smooth and well combined. Dip the biscuits in coffee and arrange them in a single layer in a rectangular dish. Spread a layer of the creamy mixture over the biscuits. Repeat the process, alternating layers of biscuits and cream, until you reach the desired height. Refrigerate the Bolo de Bolacha for a few hours to allow it to set. Serve chilled, dusted with cocoa powder. It's a simple yet indulgent dessert that is loved by many in Portugal.
