This refreshing layered cake combines the zesty brightness of authentic Key limes with the nostalgic, honeyed crunch of a graham cracker-infused sponge. It is perfectly balanced by a silky cream cheese frosting and a toasted graham cracker crumble.
Store the cake in an airtight container in the refrigerator for up to 4 days. For the best flavor, allow the cake to sit at room temperature for 20 minutes before serving. You can substitute regular limes (Persian limes) if Key limes are unavailable, though the flavor will be slightly less tart.