Preheat oven to 350ºF (177ºC). Grease and flour a bundt pan or a 9 inch by 9 inch metal baking pan. Set aside.
In a medium bowl, stir together flour, cinnamon, baking powder, baking soda, and salt. Set aside.
2 cups all-purpose flour, 3 teaspoons ground cinnamon, 1 teaspoon baking powder, ½ teaspoon baking soda, 1 teaspoon kosher salt
In bowl of a stand mixer, beat butter and both sugars on low speed until blended.
½ cup unsalted butter, 1 cup dark brown sugar, ¼ cup granulated sugar
Increase speed of mixer to medium-high and beat 3 minutes until well combined and fluffy.
Add eggs one at a time, beating well after each addition.
2 large eggs
Reduce mixer speed to low and beat in applesauce (don’t worry if the mixture looks curdled, it’s supposed to look that way!).
1 ¼ cups applesauce
Beat in flour mixture on low until smooth, scraping bowl occasionally with rubber spatula to ensure it’s fully mixed.
Scrape batter into prepared pan and spread evenly. Bake 40 minutes or until toothpick inserted in center of cake comes out clean (bake time is the same for both the bundt pan and the 9×9 pan).
Cool completely on wire rack. Just before serving, dust with powdered sugar or drizzle with caramel sauce. Slice and serve!
powdered sugar or caramel sauce