Yes, you can make the peach dump cake recipe with fresh peaches, but with changes of course. I highly recommend trying it during peach season. You will need 5-6 peaches, peeled, de-pitted and sliced. The sliced peaches are then tossed with 1/4 cup of brown sugar (add 1/2 teaspoon ground cinnamon, if you like as well). Frozen peach slices can also be used in the same manner. Simply toss the frozen peaches with the brown sugar. Top with cake mix and butter as above. This is also how you can make a nectarine dump cake NOTE: You may need to adjust bake time, as these options will take a little longer to bake.