No matter there is only one product or multiple products, show it on the recipe tooltip anyway.
Currently, recipes with more than one products will have the products being shown on the tooltip.
For example:
Recipe icons may not reflect the products, and even recipe names may not be able to describe the products, like the example above.
(Not saying this mod is bad. It will be boring if all recipe names are product names, or even confusing if all recipe icons are product icons.)
Some recipes may be simpler. Their names can show what and how many products they can produce. But still, we humans can handle icons better than texts.
So, I suggest always showing the recipe products, like this: