Yes! We really love these cupcakes just as is, with the Lime Jello. It gives a really nice lime flavor and color! However, if you'd prefer not to use Lime Jello, you can substitute with lime extract. (1 tablespoon of Lime extract if not using Jello). If you go this route, I would use 2 cups (400g) of sugar in the recipe rather than the 1 3/4 cup that the recipe calls for. We reduced the amount of sugar used in the recipe because we added Jello (which is basically additional sugar). More Summer Cakes We have so many more fun party cakes to share with you! Any of these are perfect for summer celebrations. Here are just a few: