Preheat oven to 400 degrees F.

In a saucepan, heat oil. Add chopped onions and cook for about 2 to 3 minutes until they are soft.

Add minced garlic and cook for a minute.

Add sliced chayote, salt, and vegetable broth.

Cover the chayote and let it simmer for about 10-15 minutes or until the chayote is tender.

Meanwhile, in a blender, add rinsed cashew nuts, bell pepper, water, onion powder, garlic powder, salt, and cornstarch.

Blend at high speed until it forms a smoothie-like consistency.

Once the chayote is tender and the water is almost evaporated, place the cooked chayote in a 9-inch baking dish.

Layer it with vegan cheese sauce on top and place it in a preheated oven for 40 minutes at 400-degree F.

Remove from the oven and serve.