Winter Pasta

Collectively (and probably individually, as well) my family's favorite meal.  My love of this this dish is augmented by how easy, healthy and inexpensive it is.  I got the original recipe from 101 Cookbooks, but have made some changes.  Here's my version:

1lb pasta
2 bunches kale (rinsed and ends cut off - no need to devein!)
juice of ~half a lemon (to taste)
~half a cup nuts (cashews, walnuts, almonds, pine nuts)
~2 cloves garlic
1 c loosely packed basil (rinsed and stem ends cut off - no need to destem!)
~1/2c olive oil
1/4 - 1/2 avocado (optional)
~1/2c cheese (parmesan, goat, or feta)

Blanch kale, boil garlic until soft, then add to cuisinart with rest of ingredients (minus pasta).  Blend until relatively smooth.  Cook pasta according to taste, combine with sauce.