Nexus Protein Mug Cakes the treat where you won't be able to stop at just one, prepare yourself for this simple to make mug cake. Packed full of protein and contains no nasties, this is the perfect guilt-free snack for all to enjoy. Indulge in the rich, gooey blend of chocolate and caramel in every bite. This mug cake is a decadent treat, perfect for satisfying your sweet cravings.