Prune Cake

The cake can be baked up to 2 days ahead and stored unfrosted, wrapped tightly in plastic wrap at room temperature. The prunes can be cooked, cooled, and chopped up to 3 days in advance and refrigerated. Frost the cake within 2 hours of serving for best texture.

Store frosted cake covered at room temperature for up to 2 days, or refrigerate for up to 4 days if using the raw egg white frosting (bring to room temperature before serving). Unfrosted cake can be wrapped and frozen for up to 3 months; thaw overnight at room temperature before frosting.