Peach Cake with Brown Sugar Frosting from The Food Charlatan. A delightfully peachy cake made from a cake mix and a packet of Jello, of all things! Don't knock it til you try it! There are real peaches in the cake, which makes it super moist (ok, and a lot of oil). It is topped with a rich brown sugar frosting! It almost has a caramel effect. Such a perfect summer dessert!