Preheat oven to 350°. Place cubes of butter into the bottom of a 9x13 baking dish and place in the oven until melted. Remove once melted and set aside.
Core, peel and thinnly slice apples. Place in a large bowl and add 1/4 cup of dry cake mix, brown sugar, cinnamon and nutmeg. Mix until well coated.
In another large bowl, whisk together the remaining dry cake mix and the milk.
Pour batter into baking dish and over melted butter.
Pour apple mixture over the batter {making sure to distribute them evenly}.
Bake for 40-45 minutes or until golden brown. Serve your cake mix apple cobbler warm or store at room temperature for up to 4 days.