Vegan Mushroom Carbonara

Name: Vegan Mushroom Carbonara
Cuisine: European, Italian, Mediterranean
Ingredients: 2 cups raw cashews; 4 cups filtered water; 250g brown rice pasta; 1 bag 400g g white button mushroom; 1 bag g brown mushrooms; 2 small onions; 1-2 tbsp butter/ghee or olive oil; 3 cloves garlic; 1 can coconut cream or milk; 3 tbsp. tamari; 2 tbsp. flat-leaf parley, and some extra for garnish; ¼ cup nutritional yeast