I found this recipe on Pinterest and thought it was so cute I had to give it a shot. I was making cupcakes for a friend and wanted to make them extra adorable! http://thefirstyearblog.com/watermelon-cupcakes/
I used white cake mix, I made my own buttercream icing and as the recipe said..I used watermelon koolaid for the flavor.
I was told the icing tasted like “key lime” from my boyfriend hahaha but also was told like a watermelon jolly rancher.
They are tart but I also think the amount of watermelon flavor you want will determine it!
I used of course green food coloring for the cake and red for the icing to make it pop!