1 packet marie biscuits
500g icing sugar
2 1\2 tablespoons cocoa
1 teaspoon vanilla essence
Add icing sugar, cocoa and mix.
Beat egg, add vanilla essence to above mixture and mix until smooth paste.
Add crushed biscuits and spread onto baking sheet.
Refridgerate for 1\2 an hour. Cut into squares.
Great for kids parties.