Pour the can of peaches into the crockpot with the syrup.
Next, top with the cake mix. Sprinkle the cinnamon sugar mix across the top of the cake mix. Then, place slices of butter across the top as in the photo.
Allow to cook on high for 2-3 hours. When finished, remove the lid while it cools. This will allow the sugar that melted down on top to forma crispy layer.