Preheat oven to 350. Spray a 13 x 9 pan with baking spray and set aside.
In a large bowl, combine the cake mix with one egg and the melted butter. Then, fold in the chopped pecans. Press the mixture into the bottom of the prepared pan.
In another bowl, beat the cream cheese until it begins to fluff. Add in the other two eggs and beat until fully combined. Add in the powdered sugar and beat until it’s light and fluffy.
Spread the cream cheese mixture on top of the butter pecan mixture. Bake for 30 minutes or until the cake is a light brown color on top.
Let it stand for at least 30 minutes then cut into bars and serve.