I tried the recipe and, well, they turned out rather dry and the cookie crumbled.
She crumbled coconut flakes onto the white icing of the cake she'd baked earlier.
She crumbled the letter and ate it before leaving the small poolroom.
(not sure if this refers to tearing the letter, or crumpling, but will include it here)
At that age even the Sphinx is crumbling, and it's carved out of solid rock.
WordNet 3.0 Sense Numbers: 1, 2, 3
NOTE: Includes abstract usages
The market crumbled.
The king's support crumbled, and William and Mary were able to take his throne.
A mother described how she crumbled on learning a trusted male friend had sex with all three of her teenage daughters.
When Annika went to compete with the men, she crumbled under the pressure and never went back.
WordNet 3.0 Sense Numbers: 3
Commentary: Includes: COOKIE CRUMBLE--referring to how things turn out
NOTE: Please tag ONLY this idiom with this sense
That's the way the cookie crumbles.
Three days before the Chicago race the cookie crumbled the other way.