2 (16 ounce) cans peaches in heavy syrup
1 (18.25 ounce) package yellow cake mix
1/2 cup butter
1/2 teaspoon ground cinnamon, or to taste (optional)
Preheat your oven to 375 degrees F
Dump the peaches into the bottom of one 9×13 inch pan or similar casserole dish. Distribute peaches evenly along the bottom. Cover with the dry cake mix and press down firmly. Cut butter into small pieces and place on top of cake mix. Sprinkle top with cinnamon (if using)
Pop it into the pre-heated oven and bake for 45 minutes.
Serves 6 to 8