In a small saucepan over medium heat, add all ingredients except maple syrup and nuts.
Bring to a boil, then reduce to a simmer and stir occasionally for about 10-12 minutes or until apples are soft and quinoa has absorbed the liquid and broken down.
Remove from heat. Stir in or top with nuts, and add the maple syrup or honey if you want a sweeter porridge. Top with more fresh apple, if desired, and serve.
Notes
Feel free to add more spice, such as cardamom or nutmeg.