Prepare the Cashew Cream. In a blender, combine the raw cashews with ½ cup of the vegetable broth (or water) and blend until completely smooth. Set aside.
Sauté the Aromatics (Without Oil). In a large pot over medium heat, add the diced onion, celery, and garlic. Sauté using a splash of vegetable broth or water, stirring frequently until softened (about 5 minutes).
Cook the Base. Add the potatoes, corn, remaining vegetable broth, nutritional yeast, smoked paprika, thyme, turmeric, salt, and pepper. Bring to a boil, then reduce heat to a gentle simmer. Cover and cook for about 15 minutes, or until potatoes are fork-tender.
Blend for Creaminess. Using an immersion blender, blend about half of the chowder directly in the pot. This step creates a creamy base while keeping some potato chunks for texture. (Alternatively, remove about 2 cups of the chowder, blend in a regular blender, then return it to the pot.)
Add the Cashew Cream & Final Touches. Stir in the cashew cream and unsweetened plant-based milk. Simmer for another 5 minutes, stirring occasionally. Taste and adjust seasoning as needed. Stir in fresh lemon juice to brighten the flavors.
Serve & Enjoy! Ladle into bowls and top with fresh parsley, green onions, a sprinkle of smoked paprika, or extra corn. Enjoy hot!