Blend cashews and water until smooth; set aside. Alternatively, use light coconut milk.
Cook onion in melted vegan butter until translucent. Add garlic, flour, salt, and pepper; cook briefly. Whisk in vegetable broth and simmer until thickened.
Add cashew cream or coconut milk, mixed vegetables, and white beans. Simmer for 10-15 minutes, adjusting water if needed.
Drop spoonfuls of biscuit dough over the soup and bake at 400°F (204°C) for 15-20 minutes until biscuits are golden.
Let cool slightly, then serve. Best enjoyed fresh.
Notes
For a creamier texture, blend cashews thoroughly or use coconut milk. Adjust seasoning to taste.