Preheat the oven to 350 degrees F. Generously coat two 6-count donut pans with nonstick cooking spray to prevent sticking. Mix the dry ingredients. In a large bowl, whisk together the whole wheat pastry flour, almond flour, baking powder, baking soda, apple pie spice, cinnamon, and salt until well combined.
Mix the wet ingredients. In a separate bowl, whisk together the eggs, apple cider, Greek yogurt, applesauce, maple syrup, and vanilla extract until smooth.
Combine the batter. Pour the wet ingredients into the dry ingredients and gently stir until just combined. Be careful not to overmix, as this can make the donuts dense.
Fill the donut pans. Spoon the batter into a large zip-top bag or piping bag and snip off one corner. Pipe the batter into each donut cavity, filling each about ¾ full. This recipe makes 12 donuts. Bake. Bake for 10 to 12 minutes, or until the tops are lightly golden and a toothpick inserted into a donut comes out clean.
Cool the donuts. Let the donuts cool in the pan for about 5 minutes, then carefully transfer them to a wire rack to cool completely.
Make the cinnamon sugar coating. Once the donuts have cooled, melt the coconut oil (or butter). In a shallow bowl, stir together the cane sugar and cinnamon.
Coat the donuts. Using a pastry brush, lightly brush each donut with the melted coconut oil, then gently coat both sides in the cinnamon sugar mixture. Serve immediately and enjoy!