Step 1

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

Step 2

In a large bowl, use an electric mixer to beat together cake mix and eggs until well combined. Mixture will be thick.

Step 3

Switch to a spatula and mix in the apple pie filling and applesauce until well combined. Spread into the prepared pan.

Step 4

In a medium bowl, mix together the brown sugar, flour, apple pie spice, and salt. Work the butter into the mixture with a fork, pastry blender, or your fingertips until large clumps form. Sprinkle over the cake batter.

Step 5

Bake for 40-45 minutes, or until a toothpick inserted in the center of the cake comes out clean.