- 1 1/3 (16.5 ounce) packages red velvet cake mix
- 1 cup butter, melted
- 2 eggs, divided
- 2 egg yolks, divided
- 2 (8 ounce) packages cream cheese, softened
- 1/2 cup sour cream
- 1/2 cup white sugar
- 1 teaspoon vanilla extract
- Preheat oven to 350 degrees F (175 degrees C). Line a 9×13-inch baking pan with parchment paper.
- Mix red velvet cake mix, butter, 1 egg, and 1 egg yolk together in a large bowl. Press evenly into the bottom of the prepared pan.
- Whisk cream cheese, sour cream, sugar, and vanilla extract together in a separate bowl. Beat in 1 egg until smooth. Beat in 1 egg yolk.
- Spread cream cheese mixture over the red velvet layer in the pan.
- Bake in the preheated oven until a toothpick inserted into the center comes out clean, about 20 minutes. Cool in the pan, about 30 minutes. Cut into bars.