Preheat your oven to 350°F (175°C). Grease a 9x13 inch baking dish with non-stick spray or butter to prevent sticking.
In a large mixing bowl, gently combine the drained peaches with the sugar and ground cinnamon. Stir gently until the peaches are evenly coated with the sugar mixture.
Spread the peach mixture evenly in the prepared baking dish.
Sprinkle the dry yellow cake mix evenly over the layer of peaches. Be careful not to stir; just distribute the cake mix as evenly as possible.
Pour the melted butter over the cake mix, ensuring all areas are well covered. The butter will seep into the cake during baking and create a crispy top.
If desired, sprinkle the chopped pecans evenly on top for added crunch and flavor.
Bake the cake in the preheated oven for 45-50 minutes, or until the top is golden brown and bubbly.
Remove the cake from the oven and let it cool for a few minutes before serving.
Serve the cake warm, preferably topped with a scoop of vanilla ice cream for a delicious contrast.
Notes
Serve warm with a scoop of vanilla ice cream for a delightful treat.