Digestive Biscuits, Dark Chocolate, Butter, Nuts (optional), Vanilla Extract, Cocoa Powder (optional)
Break biscuits into small pieces for a crumbly texture
Gently heat chocolate and mix in butter until smooth
Mix crushed biscuits with melted chocolate and nuts thoroughly
Stir in vanilla extract to enhance the cake's flavor
Pour the mixture into a lined baking dish and press firmly
Refrigerate until firm, then cut into squares and enjoy