Kale is something I have learned to add to my cooking. I know the "rage" is kale chips, which are surprisingly easy to make at home, but I find that after awhile kale chips can become boring. Of course you can add kale to many soups like minestrone, tortilla, etc.
Recently I have found that you can add kale to your smoothie drinks. I love adding blueberries and cherries with some kale. Try using almond milk for a nutty taste. For a healthier version add some flax seeds or bran.
You may be surprised how easy it is to add kale to your diet.