Instructions

• 1 Preheat oven to 325°F and prepare a 9x13-inch baking dish with non-stick cooking spray. Set aside.
• 2 For the crust: Mix vanilla cake mix, butter, and egg in a large bowl with a fork or with your fingers until mixed together as thoroughly as possible. The texture of the mixture will be dry and clumpy.
• 3 Transfer the mixture to the greased pan. Press the mixture down with your hands, covering the bottom of the pan as well as slightly up the sides of the pan.
• 4 For the filling: Set aside 1/4 cup powdered sugar to use after baking. In a large bowl, mix the softened cream cheese, eggs, and vanilla extract. Slowly add in 3 3/4 cups powdered sugar while mixing. When you're done mixing, the filling should be nice and creamy.
• 5 To assemble: Pour the filling over the crust in the pan. Bake for 40 to 45 minutes, or until the top is golden brown.
• 6 Remove the bars from the oven and let them cool. The filling will appear puffy, but will settle upon cooling. After about 10 minutes or so, sprinkle the remaining 1/4 cup powdered sugar over the top. Cool completely before serving.