Step 1

Preheat the oven to 375 degrees F.

Step 2

Pour the peaches and their syrup in a 9x13-inch baking dish.

Step 3

Cover the peaches with the cake mix and press down on it firmly.

Step 4

Scatter the butter pieces on top of the cake mix.

Step 5

Sprinkle the butter with the cinnamon.

Step 6

Bake the cake until it is golden-brown, about 45 minutes.

Step 7

Serve with the vanilla ice cream.