Preheat the oven to 350°F and spray a 9x13 baking pan with non-stick spray.
In a large bowl, mix the cake mix, cream cheese, eggs, and oil until smooth.
In a small bowl, combine the brown sugar and cinnamon.
Pour half of the batter into the prepared pan, then sprinkle the brown sugar-cinnamon mixture evenly over it.
Pour the remaining batter on top and smooth it out.
Bake for 30-35 minutes, or until a toothpick comes out clean.
Mix the icing ingredients, adding pink food coloring, and pour over the warm cake. Cool completely, then serve and enjoy!