Preheat oven to 350°F.
Mix together cake mix, egg and butter.
Pat into a parchment lined, greased 9×13″ pan.
Peel and chop apples.
Toss with sugar, cinnamon and nutmeg.
Sprinkle chopped apples over the cake batter in the pan.
Top with chopped pecans.
Drizzle with sweetened condensed milk.
Bake for 30-35 minutes.