Strawberry Cookie Bars with Cream Cheese Frosting

"The bars are incredibly easy to make because I used strawberry cake mix and it gives the bars exactly the consistency I want. Soft, chewy, and ironically not cakey. You don't mix up the cake mix as if you were making a cake. Instead, simply add one stick of butter and an egg before pressing the dough into a pan. It'll be thick and dense, but the softer the butter is the easier the dough comes together. The sweet strawberry flavor pairs perfectly with the tangy vanilla cream cheese frosting. The bars are perfect for Valentine's Day, Easter, Mother's Day, bridal and baby showers, and put me in the mood for spring and summer...."