In a medium saucepan, combine the rinsed quinoa and 2 cups of almond milk. Bring to a boil over medium heat, then reduce the heat to low, cover, and simmer for 15 minutes, or until the quinoa is tender and most of the liquid has been absorbed.
Stir in the diced apples, maple syrup, cinnamon, and a pinch of salt into the quinoa. Continue to cook, uncovered, over low heat, stirring occasionally, for 5-10 minutes, or until the apples are soft and the porridge has thickened to your liking. The apples should be tender yet retain a slight bite.
If the porridge is too thick, add a little more almond milk until you reach your desired consistency. Taste and add more maple syrup if you prefer it sweeter.
Spoon the warm porridge into bowls. Top with your choice of chopped nuts, fresh berries, or a dollop of yogurt for an extra touch of creaminess and flavor.
Drizzle with a little more maple syrup or almond milk before serving, if desired.