Before you begin baking, cut a piece of parchment paper and line your baking dish. Set it aside.
Mix the box of cake mix with the butter and one egg until it forms a dough.
Press the dough into the lined 9x9 cake pan and set it aside.
Mix the confectioner's sugar, two eggs, and cream cheese until well combined.
Pour it over the dough in the 9x9" pan and bake it at 325 degrees for about 40 minutes. You want the edges to be golden brown.
Remove from the oven and let it cool before you slice it.