I'm guessing that one could use frozen kale for this one, but we usually use kale in the following:
Portugese kale soup (linguica/white beans, garlic, stock, potato chunks, and LOTS of kale...)
Kale Calzone-- like a great big kale turnover, filled with finely chopped kale, ricotta (or cottage cheese if you're cheap like us), a little mozzarella, sweet onions, and mushrooms (or not, if you're feeding DD). This is SO yummy.
Yeah, took one look at the TJ's bagged kale and said...Uhhhhhhh, NO. Kale stems are good for rabbits. Not peoples.