Culinaria, truly gooey, red velvet butter cake

Cake mix [wheat flour, sugar, cornstarch, canola oil, baking powder (sodium acid pyrophosphate, sodium bicarbonate, cornstarch, monocalcium phosphate), salt, natural flavors, xanthan and/or guar gum], powdered sugar, eggs, cream cheese [pasteurized milk and cream, salt, stabilizers (xanthan and/or carob bean and/or guar gum)], cocoa powder (processed with alkali), butter with natural flavor (cream, natural flavors), soybean oil and/or canola oil and/or cottonseed oil, sugar, wheat flour, fd&c red #40, artificial flavor, potassium sorbate (preservative)