Step 1

Preheat your oven to 400°F (200°C).

Step 2

Roast the garlic: Slice off just the tops of the garlic bulbs so that the cloves are revealed inside. Place all four bulbs open side up on a large square of foil. Pour 1 tsp oil over each bulb, and sprinkle each with a little salt and pepper. Wrap them up in the foil, place on a baking sheet, and roast for 40 minutes, until the cloves are very soft. Allow the garlic heads to cool so you can handle them more easily.

Step 3

Make the soup: in a large soup pot, heat the oil over medium-high heat. Add the onions and sauté for about 5 minutes, until they soften and begin to brown. Add the broth, water, cashews, nutritional yeast, salt, and pepper and bring to a simmer. Cook for about 15 minutes, until the cashews are softened.

Step 4

Working in batches, carefully transfer the soup to a blender, being careful not to overfill the blender so that it doesn’t erupt. Squeeze the garlic out of the skins and add to the blender as well. Blend until completely smooth and creamy. Alternatively, an immersion blender will work in a pinch, but i generally prefer a standing blender as it usually does a better job of blending the cashews into a smooth cream.

Step 5

Return the soup to the pot, add the kale, and bring to a simmer. Cook for another 5 minutes, until the kale has softened. serve hot.