I remember this from when I was younger. But back then we would crush Marie biscuits to pulp. This time it's easier for there is crushed Graham crackers available in the market.
I just can't recollect the whole recipe so I improvised.

crushed graham crackers
condensed milk
milo
confectioner's sugar
I didn't use any measuring cup whatsoever because I just did it by "feel".
Mix graham crackers, condensed milk and a little milo. Make sure that the mixture is goeey enough to hold together. Form balls with the dough. Roll in milo and then sprinkle with confectioner's sugar. Refrigerate.
Fyi, I definitely remember when I was younger that we used dessicated coconut. But since this was not in our cupboard I just made do with confectioner's sugar.
