Another good idea would be a panel/field for the last recipe that was run, placed at either the top or bottom of the Cookbook.

After waiting a long while for a particular recipe to finish, I often forget the last recipe I ran on a protein, especially when I have multiple instances of the program open at once. It could waste time re-running a particular recipe that has already been run, so it is useful to know what the last one was.

Also, it is handy in some cases to re-run a particular recipe after it has finished. Instead of looking back through a long list of recipes for it, you can simply click on the "Last recipe run" field, and it will re-run that recipe.