I like it best when it's chilled in the refrigerator for a couple hours before serving Rather than cooking the spinach, I just but it in a colander and run hot water over it for a few minutes until it has all defrosted
Don't forget to squeeze the excess water out of the spinach before adding
Recipe by Sugar n' Spice Gals at https://sugar-n-spicegals.com/knorrs-spinach-dip/