I have sliced them lengthways and pounded them out very flat. You get about 4 rectangular portions, depending on the size of the tenderloin. They are so tender its ok to cut them with the grain. Especially after pounding. I have no problem biting into them. Then I quick grill with lots of sauce...
They go on sale around here a lot. You can pick one up for 3 or 4 bucks when they do.