In a stand mixer, beat the vegetable shortening, vanilla extract, coffee creamer and milk until it's all cohesive. Next, beat in one cup of confection sugar at a time on medium speed as the sugar will definitely come out of the mixer if you put all of the sugar in or beat it on high. Use a spatula to spoon in all of the ingredients from the sides. Once all three cups of confection sugar are inside the stand mixer, you can gradually raise the speed to high. Beat until all of the ingredients are thoroughly combined and very smooth.
Place first cake round on an 8-inch cake board. Cut a once inch circle from the middle of the cake. I like to pipe icing on the cakes to ensure each cake has the same amount of icing. Cut out a inch circle from the middle of the second cake. Stack the cake on top of the first one and pipe icing on it. Finally cut a 1 inch hole from the middle of the last cake. Place it on top of the second cake.
Fill the hole up from the cakes with Lucky Charms Cereal or just the marshmallows from Lucky Charms. Your kids or guests will love the surprise when they cut into the cake and Lucky Charms fall out!
Ice the cake (crumb coat). My cakes are pretty moist so icing it the first time, there are visible crumbs in the icing. I refrigerate the cake while I clean up for a half hour. This allows the first layer of icing where you can see the crumbs to harden. I then apply more icing and smooth out the cake. After the second coat you won't see any crumbs. I use a cake spinner and icing knife to get my icing smooth.
Microwave the white chocolate for one minute. Stir it so it's all melted. Then transfer it to a piping bag. Pipe out a " cereal milk" drizzle on the cake.
Using the star pipe, make a border of rosettes across the top of the cake.
Finally, fill the middle of the top of the cake with Lucky Charms and assemble charms whimsically on the cereal drizzle.