2(15.25 ounce)cans sliced peaches in heavy syrup (do not drain)
1(15.25 ounce)box yellow cake mix
¼teaspoonground cinnamon(optional)
½cup(1 stick) cold unsalted butter(plus up to 4 additional tablespoons as needed)
Optional, for serving: vanilla ice cream or whipped cream
Instructions
Preheat the oven to 350°F. Lightly grease a 9x13-inch baking dish. Pour the canned peaches (with syrup) into the prepared dish. Spread into an even layer.
Sprinkle the dry cake mix evenly over the peaches. Dust with cinnamon.
Slice the chilled butter into very thin squares and place the squares evenly over the dry cake mix.
Bake until the top is golden brown and the filling is bubbly, about 45 to 55 minutes. After the first 15-20 minutes, check to see how the butter is melting. If you notice some dry patches of cake mix, go ahead and thinly slice some additional butter as needed to cover the top completely. Then return the dish to the oven to finish baking completely.
Notes
Make sure that you slice the butter into very thin pieces so that you have enough squares to cover most of the cake. You don’t want any large gaps between the butter squares because you want the butter to melt and cover all of the cake mix.If you’d like to add finely chopped pecans or walnuts to the cake, you can sprinkle them on top during the final 10 minutes. This allows them to toast lightly without burning.