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. These delightful, traditional biscuits (also known as thumbprint biscuits ) are super easy to make and are the perfect-sized treat for any sweet tooth. The addition of custard powder in this recipe gives them a creamy vanilla flavour you’ll adore. How to make jam drops: key tips Use electric beaters 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.