Preheat oven to 350 degrees. Lightly grease a 13x9x2" baking dish.
Spread cherry pie filling over bottom of prepared baking dish. Sprinkle evenly with chocolate morsels and sugar. Spread dry cake mix over sugar, covering pie filling. Sprinkle evenly with chopped pecans. Place butter pats over cake mix, covering cake mix as evenly as possible. Bake 1 hour; let cool 30 minutes before serving. Serve with whipped cream if desired.