Place cashews in a small bowl and cover with 10 tablespoons of hot water. Soak for 30 minutes up to 4 hours. Note: the cashews will just barely be covered. Stir once or twice in the soaking process to fully soften for that creamy texture.
Place all ingredients: cashews and their soaking water, salt, lime juice, nutritional yeast and salsa into a high speed blender.
Blend on high speed until the mixture is smooth and creamy for about 60 to 90 seconds, scrapping down the blender occasionally.
Transfer the vegan queso dip to a small saucepan to heat, stirring frequently, being careful not to burn.
Pour into serving bowl and enjoy!