Fondant Cake, Watermelon

cake batter: (white cake mix [sugar, enriched bleached wheat flour (enriched with niacin, reduced iron, thiamine mononitrate, riboflavin, folic acid] palm oil, food starch - modified leavening, contains 2% or less of the following: non fat dry milk powder, dextrose, salt, sorbitan monostearate, sodium stearoyl, lactylate polysorbate 60, artificial flavor, xanthan gum, guar gum, cellulose soy flour, canola oil, modified food starch, sodium propionate, fondant: (sugar, corn syrup, palm oil, gum tragacanth, cellulose gum, modified corn starch, potassium sorbate, glycerine, acetic acid, color* may contain one or more of the following colors: titanium dioxide, fd&c yellow #5, fd&c yellow #6, fd&c red #3, fd&c red #40, fd&c blue#1, caramel coloring, vanilla frosting: (confectioners sugar, all purpose palm shortening, palm oil mono-and diglycerides polysorbate 60, vanilla extract, salt, chocolate filling: (confectioners sugar, palm shortening (palm oil, mono-and diglycerides polysorbate 60, cocoa powder, vanilla extract, pan grease: (all purpose palm shortening, canola oil, bleached wheat flour