Preheat oven to 425 degrees and place cauliflower, shallots, and garlic evenly on a sheet or in a casserole dish. Coat with the oil and spices. Roast for 30 minutes. Allow it to slightly cool.
Add everything together in the blender and process until smooth, about 2-5 minutes based on your blender.
Pour into soup bowls and garnish.
Notes
This soup is thick, like a bisque. If you want a thinner texture just add more nut milk or water to adjust to your preference.