What non-dairy ingredients can I add to mashed potatoes to make them thicker and creamier? Most of the family is lactose-intolerant, so we usually just add margarine and chicken broth, but the resulting mashed potatoes seem a little thin. (Also, Mom likes to use her hand mixer after we do the initial mashing with the potato masher...)
I've tried adding a neutral goat cheese in the past and that has helped a little, but I'm open to other suggestions. Butter and any kind of real milk, cream or cow's milk based cheese are not options.
P. S. This is my first post, and I did search recipes for ideas first.