Om nom nom nom

Today's discovery: when a recipe says it makes 18 very large cookies, it apparently means very large. Much larger than the photo on that page would suggest.

Since it's just me here I reduced the ingredients to a third and had a go at baking it... and yet somehow I still achieved a dozen merely largeish cookies. Um.

There does seem to be something of a lack of recipes for small batches of not-crazy-large cookies. Anyone have any ideas?