Doughty: brave and persistent; valiant; worthy. Sadly, this has nothing to do with cookie dough.
Unless your cookie dough is brave and persistent, in which case, I defer to your baking expertise. And to your doughty cookies.
According to Boromir, both Aragorn and Boromir are doughty, though lacking spades (i.e. shovels, only classier). According to Frodo, Faramir and his men are doughty. This suggests a synonym: Gondorian. Perhaps the OED editors are working this into their next edition.
For your edification: