01 -
Preheat oven to 350°F. Spray a 9×13-inch baking dish with cooking spray.
02 -
Peel and slice peaches. Add sliced peaches to a small mixing bowl. Stir in brown sugar, cornstarch, lemon juice, and cinnamon until well combined.
03 -
Transfer the peach mixture to the prepared baking dish.
04 -
In a separate mixing bowl, combine melted butter and cake mix. Use a pastry blender or clean hands to mix until a crumbly dough forms.
05 -
Sprinkle the crumbly mixture on top of the peaches in the baking dish. Top with coarsely chopped pecans.
06 -
Bake in the oven for 40 to 50 minutes, or until the topping is light golden brown and the peach filling bubbles at the edges.
07 -
Serve warm with a dollop of whipped cream or a scoop of vanilla ice cream.