Before you start make sure you put the mamon in the freezer first. This will make decorating them much easier. If you try to frost them as is, there will be ripping so don't email me if that happens. You have been warned. They should be in the freezer for at least 1 hour.
Make the Ube frosting by mixing together ½ cup of Ube Halaya and ½ cup of marscapone in a bowl until nice and smooth.
To decorate place a spoon of ube halaya on to your serving platter. Then place the first frozen mamon on top. Spread 1 tablespoon of Ube Halaya all over the mamon and then place the second frozen ube mamon one top and also spread that with 1 tablespoon of Ube Halaya. To have a flat top place the 3rd frozen mamon upside down so that the flat bottom is facing up.
Now we start frosting! Using half of the frosting spread it all over the cake layers and make it as smooth as possible. This is what we call the crumb coat to help seal in the cake so that it doesn't rip or fall apart when the second coat of frosting is put on. Place the cake in the fridge for 10 minutes to chill and set.
While the cake is setting gather your decorations. I initially wanted to use some flowers, but at the end it was better super minimal. If you do use flowers and greenery make sure they are washed and dried. Oh and if you use something that is not edible please let your guests know to not eat it.
After 10 minutes take chilled cake out and now you can use the remaining frosting to shape the cake and make any swirls or decoration.
Once you are done spoon the remaining Ube Halaya on top of the cake. Add any fruit or herbs or flowers to the cake. Use your creativity here and make it your own.
Chill in the fridge until you are ready to eat it.