Cake Batter Blondies

So you liked last week's recipe for cake batter rice krispy treats huh? 
I knew you would :)
But you've probably been wondering what to do with that left over cake mix.

Well I hope you kept it and stored it in a sealed container, because here's another cake batter recipe for ya.

Cake Batter Blondies

slightly adapted from The Sweets Life

1 cup yellow cake mix
1 cup flour
1/4 teaspoon baking soda
3/4 cup butter, melted & cooled slightly
1 egg
1 egg yolk
2 teaspoons vanilla
1/2 cup sugar
1/2 cup brown sugar
4 tablespoons sprinkles

Preheat oven to 350F. Prepare an 8 x 8 inch pan with aluminum foil. 
In a mixing bowl, beat together sugars, butter, vanilla, egg, and egg yolk until creamy and smooth.
Stir in flour, cake mix, and baking soda until well combined. Mix in the sprinkles.
Spread dough evenly in prepared pan, smoothing with a spatula.
Bake for 30-35 minutes until top is lightly browned.
Allow to cool for 15-20 minutes before removing foil from pan and cutting into squares.
Enjoy.