I had some wonderful spinach at a restaurant in Columbia, SC this weekend. It had garlic and sun dried tomatoes. They probably used butter--not sure. I just used:
5 ounces of fresh baby spinach (comes in a plastic box)
couple of tab. of sun dried tomatoes packed in oil (comes in a jar)
a tablespoon or so of minced garlic (from a jar)
a few spritz of olive oil
salt and pepper
I put these in my iron pan and cooked until the spinach was wilted.
We then used the above sauce, which was really wonderful. (It is expensive , but you only need a few tablespoons of it on an individual bowl of pasta because of the fullness of the flavor) This product had a wonderful consistency and used Imported Italian tomatoes, Italian olive oil, fresh basil, fresh onions, fresh garlic, sea salt and spices. It is distributed by DZA Brands, LLC in Salisbury NC.