Season the cubed beef with salt and pepper, give it a good sear.
Throw all the other ingredients (except cheese) in a blender or food processor and blend, then dump into the slow cooker. Add in bay leaves and close the lid.
After about 4 hours, the chuck should be pull-apart tender. Separate consommé from beef.
Butter up the skillet and toast bread, then build the sandwich. Cut and dip in consommé and cilantro.
