Creating No-Bake Chocolate Biscuit Cake is as easy as following these straightforward steps:

1. Prepare the Biscuits: Break the digestive biscuits into small pieces. You can do this by placing them in a zip-lock bag and crushing them with a rolling pin or simply breaking them by hand. Set aside.
2. Melt the Chocolate: In a microwave-safe bowl, combine the dark chocolate and unsalted butter. Heat in the microwave in 30-second intervals, stirring in between, until melted and smooth.
3. Combine Ingredients: Once melted, stir in the sweetened condensed milk, cocoa powder, vanilla extract, and a pinch of salt. Mix until well combined and smooth.
4. Add Biscuits: Fold the broken biscuits into the chocolate mixture, ensuring they are evenly coated.
5. Line the Pan: Line a loaf pan or a rectangular dish with parchment paper, allowing some overhang for easy removal later.
6. Transfer Mixture: Spoon the biscuit mixture into the prepared pan, pressing down firmly to create an even layer.
7. Chill: Cover the pan with plastic wrap and refrigerate for at least 2-3 hours, or until fully set. For best results, leave it overnight.
8. Remove from Pan: Once set, lift the cake out of the pan using the parchment overhang and transfer it to a serving platter.
9. Decorate: If desired, sprinkle with crushed nuts, chocolate shavings, or fresh berries for an impressive finish.
10. Slice and Serve: Cut into slices and enjoy your delicious No-Bake Chocolate Biscuit Cake!

Following these simple steps will ensure you create a delicious dessert that everyone will love.