There isn't another pasta that gives you the same mouth feel with the spicy cheese sauce as jumbo elbow macaroni (and yes, I realize the risk I'm taking by posting that...but it's the truth.) A silky smooth sauce combined with a silky smooth pasta tube is pure decadent heaven. Penne has its place, and so does macaroni.
I assume I add a pinch of sea salt to the water? Boiling water, throw in kale, no more than a minute, 30 seconds would be perfect, and finish in an ice bath. Drain/dry and throw in a fresh garlic clove and a twig of fresh rosemary and freeze. Is that about right? Squish the air out of the bag.