Add 1 cup of amaranth to a pot with 2½ cups of water. Bring this to a boil, then cover and reduce heat to low. Let the amaranth cook for about 20 minutes or so until all the liquid is absorbed. Once it's done you'll see it has a really thick porridge consistency.
Pour the amaranth porridge into two bowls. Top each with chopped fruit of your choice, shredded coconut, seeds, and a swirl of cashew butter on the top.
You can save the second bowl of cooked amaranth for tomorrow morning, simply reheat and add toppings then.