Step 1

Preheat oven to 350°F. Spray a 9x13-inch cake pan with cooking spray and line with parchment paper. Set aside.

Step 2

In a medium bowl, whisk together the flour, baking powder, baking soda, apple pie spice, and salt. Set aside.

Step 3

In a large bowl, whisk together the sugars and vegetable oil. Add the eggs and vanilla and whisk until well combined.

Step 4

Switching to a spatula, alternate adding the flour mixture with the apple butter: add a third of the dry ingredients, followed by half of the apple butter, making sure to mix until combined after each addition. Repeat, ending with the final addition of the dry ingredients.

Step 5

Fold in the grated apple. Spread the batter into the prepared pan and bake for 40-45 minutes, until a tester inserted into the center of the cake comes out clean.

Step 6

Cool completely on a wire rack before topping with brown butter frosting or your favorite frosting of choice.