Step 1: Prepare the Oven and Pan

Preheat your oven to 350°F (175°C). Lightly coat a 9×13-inch baking dish with cooking spray to prevent sticking.

Step 2: Add the Apple Filling

Evenly spread both cans of apple pie filling across the bottom of the prepared baking dish, making sure the apples are distributed in an even layer.

Step 3: Drizzle with Caramel

Pour the ½ cup caramel sauce evenly over the apple pie filling. Use a spoon or spatula to gently spread it so every section gets caramel flavor.

Step 4: Add the Cake Mix

Sprinkle the dry spice cake mix evenly over the apple and caramel layer. Do not mix — keep the cake mix dry and evenly distributed across the surface.

Step 5: Add Butter

Slowly drizzle the melted salted butter over the cake mix, covering as much of the surface as possible. This helps the cake mix bake into a golden, crumbly topping.

Step 6: Top with Walnuts

Sprinkle the chopped walnuts evenly over the top for added crunch and texture.

Step 7: Bake

Place the dish in the preheated oven and bake for 40–45 minutes, or until the top is golden brown and the filling is bubbling around the edges.

Step 8: Cool and Serve

Remove from the oven and let the dump cake cool for 10–15 minutes before serving. This allows the layers to set slightly while staying warm and gooey.