"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)