Add the cider and bring to a boil. Reduce heat and simmer, uncovered, for about 12 minutes or until all the liquid has been absorbed. (Conversely, you may omit the toasting and simply add the cider and the quinoa to the pan (omitting the oil), bring to a boil, reduce heat, and simmer for about 15 minutes.)
Remove from heat and cool slightly.
In a small bowl, combine the eggs and milk. Add to the quinoa along with the remaining ingredients and stir to fully incorporate.
Spread the mixture into a buttered 9-inch, square pan and bake at 375 degrees for 20 minute or until set in the middle.
If desired, serve with maple syrup or a dollop of Greek yogurt and a drizzle of honey.