Cream Cheese "Blondies"

My husband called these 'blondies' because they look like brownies, only they're blond...
They are sortof naughty, because they start with a cake mix...I very rarely bake with premade mixes like that. But these are so yummy, and worth the exception. (Or, if you're resourceful, you could probably figure out how to make a from-scratch 'cake mix' and use that!) Since cake mixes come in gluten-free varieties, this recipe can easily be adapted for that.

Base layer:
1 box yellow cake mix
1/2 cup (1 stick) melted butter
2 eggs
Mix together. It will be pretty thick, like cookie dough. Press it evenly across the bottom of a greased 9x13 pan.

Top layer (frosting):
8 oz (on package) soft cream cheese
1/2 cup melted butter
2 eggs
3ish cups powdered sugar (a little more if it seems thin)
Beat the cream cheese until smooth. Add the butter and eggs and mix well. Gradually add the powdered sugar. It should be about the consistency of frosting--very easily spreadable, but not thin enough to pour. Spread it over the base layer in the pan.

Bake at 325 for about an hour.