Hot Kale & Walnut Salad

This is a mishmash of a few different recipes I found online while searching for something to do with all the kale I had in the fridge. I'm not a big fan of cold/uncooked kale, like the "oil rubbed" kale salads you see in the deli - it's too tough. And besides, who wants to eat cold food when it's 36 degrees outside? This kale salad is lightly sauteed to soften up the leaves a bit, and really incorporate the garlic flavor.

4 T salted butter, ghee, or olive oil - divided
Couple handfuls of whole, raw walnuts
6 cloves garlic - divided
1 small yellow onion, sliced thin
1 giant bunch of kale, thoroughly torn & washed (tear off the ribs, and soak in a water/apple cider vinegar solution for a few minutes before rinsing)
1-2 T red wine vinegar (garlic-infused was used in this recipe)
S & P

Mince 3 of the garlic cloves, and saute in a tablespoon or two of the butter and/or olive oil in a pot for a minute or so. Add walnuts, stir thoroughly, and salt to taste. Set aside when slightly browned & toasty.
In the same pot, add the rest of the butter/olive oil, and saute the rest of the garlic and the sliced onion. When wilted, add the washed & rinsed kale, and saute just til it wilts slightly and is heated through. Add the vinegar, salt & pepper.
Serve with the walnuts sprinkled on top. This was enjoyed alongside sirloin steaks and a bottle of Steakhouse Red - the combination was to die for.