Soup-Herb Mushroom Delight (Vegan,GF)

Ingredients: 1 cup raw cashews soaked for at least 2 hours 1 tbsp avocado oil or whatever cooking oil you have on hand (olive, safflower, coconut etc.) 3 medium leeks, thinly sliced and washed (white parts only) 3 large celery stalks, small dice 2 1/2 lbs mixed mushrooms (any kind you like), sliced (I used…