"Cheesy" Sweet Potato Casserole (Paleo, Vegan, AIP)

Name: "Cheesy" Sweet Potato Casserole (Paleo, Vegan, AIP)
Prep time: 20 min
Cook time: 1 h
Total time: 1 h 20 min
Cuisine: American
Ingredients: 1 1/2 cups full-fat canned coconut milk; 1/3 cup broth (chicken or vegetable broth); 2 tsp apple cider vinegar; 3-4 tbsp nutritional yeast; 1/2 tsp turmeric powder; 1 tsp sea salt; 2 tsp garlic powder; 1 tbsp tapioca starch; 2 tbsp avocado oil; 1/2 yellow onion, diced; 2 cups butternut squash, cubed; 3/4 cup cauliflower florets; 9 cups of white sweet potato, peeled and chopped (about 4 medium sweet potatoes); 4 oz plantain chips, crushed; 1 tbsp parsley, chopped