Traditionally, royal wedding cakes are Christmas-style fruit cakes so they will last long enough to be served at the couple's first child's christening.
Harry and Meghan choose a spring-inspired lemon elderflower flavor covered in buttercream and decorated with fresh flowers.
Eugenie was first introduced to Cabot through the Duke of York’s Pitch@Palace program for which she provided bespoke decorated cookies.
According to Buckingham Palace, Jack and Eugenie's wedding dessert will be "a traditional cake, with a modern feel," and will "incorporate the rich colours of autumn in its design."
The cake will also feature sugar ivy, in a nod to Eugenie and Jack's new home, Ivy Cottage at Kensington Palace.
"I am incredibly excited to be given this wonderful opportunity to create such a special and unique cake," Cabot said. "It has been lovely working with Princess Eugenie and Jack and I really hope they enjoy the cake on the day."