I just do it like my old Mexican neighbor did. Melt a tablespoon or so of bacon grease in a pan. Dump in canned refried beans. Add a couple pats of butter and some Mexican crema until the beans are smooth to your liking. I have since found out there are quite a few Mexican restaurants that do it this way. YMMV

Know fat, know flavor. No fat, no flavor.

I tried going vegan, but then realized it was a big missed steak.