Preheat oven to 350 degrees. Heat 2 tablespoons avocado or olive oil in a large skillet over medium high heat. Add mushrooms, onions and 1 teaspoon salt.
Cook and stir for about 8-10 minutes – until they are golden brown and soft. If pan gets too dry while you’re caramelizing onions and mushrooms, add a tiny splash of water every so often.
Move onions and mushrooms to a bowl or plate and add the walnuts to the pan with 1/2 teaspoon of avocado or olive oil along with a big pinch of sea salt.
In a large bowl whisk together the apple cider vinegar, avocado or olive oil, and water. Add pizza dough mix and stir until well combined and a stiff dough forms.