In a blender, combine cooked cauliflower, almond milk, water, raw almonds, chopped garlic, lemon juice, onion, cucumber, 1 1/4 cups (reserve ¼ cup for toasting) almonds, blend until smooth. Add the olive oil and pulse just until incorporated. If necessary, add more water to thin the soup. Season the soup with salt and refrigerate until chilled, about 1 hour.