While the easiest way to make vegan queso is with a Vitamix (affiliate link) or similarly high-powered blender, it is possible to make queso without one.  The key is to make sure you cashews fully soften. For the best results, boil your cashews. Simply add your cashews to a sauce pan, cover with water, and . You can also try soaking your cashews overnight, though they might not pulverize quite as easily.