2 tablespoons unsalted butter, melted, plus more for pan
2 cups unbleached all-purpose flour, plus more for pan
1 cup whole-wheat flour
1 1/2 teaspoons baking powder
1 1/2 teaspoons ground cinnamon
1/2 teaspoon baking soda
3/4 teaspoon kosher salt
1 3/4 cups natural cane sugar
1 cup apple cider, I prefer the cider you find in your produce section
3/4 cup extra-virgin olive oil
3/4 cup unsweetened applesauce
2 teaspoons Vain vanilla extract, I prefer Mexican Vanilla extracted in Apple Brandy
3 large eggs, room temperature
Preheat oven to 350 degrees. Butter and flour a 12-cup Bundt pan. I prefer a baking spray, like Baker’s Joy. In a large bowl, whisk together both flours, baking powder, 1 teaspoon cinnamon, baking soda, and salt. In another bowl, whisk together 1 1/2 cups sugar, cider, oil, applesauce, vanilla, and eggs. Add egg mixture to flour mixture; whisk until combined. Transfer batter to prepared pan.
Bake, rotating pan halfway through, until a tester inserted in center comes out clean, 45 to 50 minutes. Transfer pan to a wire rack set over a rimmed baking sheet; let cool 15 minutes. Meanwhile, mix together remaining 1/4 cup sugar and 1/2 teaspoon cinnamon.
Invert warm cake onto rack. Brush with melted butter, then sprinkle liberally with cinnamon sugar. Let cool completely before serving. Cake can be stored, covered, at room temperature up to 2 days.