Key ingredients in this chocolate biscuits recipe This simple recipe makes use of ingredients you probably already have in the pantry and fridge: eggs, brown sugar, vegetable oil, vanilla essence, plain flour, baking powder and cocoa powder. Deliciously thin and crisp, these gorgeous biscuits are inspired by the discontinued old-fashioned Arnott’s version. Use various sized glass jars to indent the cookies if you don’t have various sized cutters. The biscuits were also baked and sold here at home with money going towards wartime fund-raising efforts. Their name eventually changed to ANZAC biscuits , and we are still eating them to commemorate our soldiers over a hundred years later. What’s in these rum balls? Arnott's Milk Arrowroot biscuits are great for making rum balls, but you could also use Scotch Finger biscuits , Marie biscuits or even Choc Ripple biscuits for more chocolatey rum balls.