Preheat the oven to 350 degrees and spray a 9x13 baking dish with cooking spray. Then, cut up the cinnamon rolls. Then, place them into the baking dish, and cover them with a can of cherry pie filling. Bake the casserole for 25-30 minutes. Then, using the icing from the cinnamon rolls, ice the casserole when comes right out of the oven. Enjoy!