Preheat the oven to 350°F (177°C). Coat a shallow 9×13-inch metal or foil baking pan with nonstick cooking spray.
Open both cinnamon-roll tubes and reserve the icing packets. Cut each roll into four pieces and place them in a large mixing bowl.
Add both complete cans of apple pie filling without draining. Fold gently to combine, transfer to the prepared pan, and spread into one even layer.
Bake for 45–50 minutes, until the top is golden, the filling bubbles in places, and the center dough pieces have set, bread-like interiors without raw or pasty dough. If necessary, bake in additional 5-minute increments. An optional temperature reading taken in a center dough piece should be approximately 190–200°F (88–93°C).