To make the cashew parmesan, combine all of the ingredients in a blender (I like to use a NutriBullet). Pulse until a coarse crumb forms.In a large bowl, combine sliced mushrooms and parsley. In a measuring cup, whisk lemon juice, olive oil, and a sprinkle of salt & pepper. Pour dressing mixture into bowl with mushrooms and stir to combine. Sprinkle with cashew parmesan, serve and enjoy!