Soak cashews in water overnight.
Drain and rinse cashews and add to food processor with water, mustard, lime juice, chili powder, nutritional yeast, turmeric powder, hot sauce, and sea salt. Blend on high until completely smooth and creamy. Add more water as needed.
Once fully blended, transfer queso to a bowl and mix in salsa.
Top with green onions and extra salsa if you desire. Serve warm with chips or veggies!
Can be stored in a tight covered container in fridge for up to 5 days.