PREHEAT the oven to 400 degrees.
MAKE the crust by putting the cashew nuts in a plastic bag, then use a mallet or rolling pin to crush them finely. Pour the crushed cashews onto a plate, add thyme, parsley, salt, & pepper, and set aside.
PAT halibut dry with a paper towel, then season both sides with salt and pepper.
DIP the halibut into the cashew mixture to coat the top of the halibut. Spray a sheet pan with avocado oil, add your cashew-crusted halibut, then give the tops a light spray as well.
BAKE halibut at 400 degrees for 7-10 minutes.
MAKE the mango butter sauce while the halibut is baking by adding the chopped mango, ghee, water, and Himalayan salt to a small pot.
BRING to a boil and let simmer for 2 minutes. Let cool for 2 minutes, then add the mixture to a blender and blend into a smooth consistency. If the sauce is too thick, add a teaspoon of water and blend again.
SPOON the mango butter on a plate, creating a circle larger than the halibut. Remove halibut from the oven and place on top of the sauce and serve with your favorite vegetables.
ENJOY!