Grease a 9x5 loaf pan and line with parchment paper. Overhang is great cause you want to be able to lift this chode-loaf out. I cut mine to fit. See below.
In a small sauce pan, bring apple cider to a boil and then immediately reduce to a simmer. Simmer for 10 minutes until liquid is reduced to ¾ cup. Remove from heat and let cool. While apple cider is simmering, start your donut cake!
Preheat oven to 325°F.
In a medium bowl, whisk together flour, cornstarch, baking powder, baking soda, salt, and pumpkin pie spice. Set aside.
In a large bowl, using a hand mixer, beat eggs and both sugars together until puffy and cute, 2 minutes. Then, while still beating, slowly add butter in a steady stream until fully incorporated. Set aside.
In a small bowl, add ½ cup of reduced apple cider (reserving the rest), pumpkin purée, and vanilla. Mix well.
Add pumpkin mix to egg mixture. With a wooden spoon, stir to combine. Gradually add in your dry ingredients and stir until everything comes together. Batter will be very wet and that's ok!
Pour batter into prepared loaf pan and place loaf pan on a baking sheet. Place on middle rack of oven and bake 60-70 minutes, or until a toothpick inserted comes out clean. Rotate halfway through bake. Remove from oven and allow to cool for 10 minutes.