Coarsely chop kale and blanch in boiling water seasoned with ⅛ tsp salt for about 3 min. Quickly transfer kale to an ice bath to maintain color. Set aside.
Melt butter in a large skillet over medium heat and add the remaining ⅛ tsp salt and the julienned (thinly sliced) onion.
Cook until softened. Then, add the garlic, red pepper flakes, and nutmeg and cook another 2 minutes.
Add the room temperature half 'n half over medium heat. Cook, stirring occasionally, until the cream thickens to a sauce consistency, about 5 minutes.
Add kale and Parmesan cheese and toss to coat and let it soften, about 5 minutes.
Season with salt and pepper to taste and remove from the heat. Transfer to your favorite casserole dish or serving plate to serve.
*I used Lacinato Kale (aka Dinosaur Kale), but this recipe works with curly kale, too. I didn’t love the texture of curly kale as much with this soft, rich sauce, so I decided to splurge on Lacinato kale. I was willing to spend a little extra to see my family gobble up all of this creamed kale!