A very common question I get is if the DTC silicone mats will work on a buttercream cake. I wasn't sure so I decided to give it a try.
I decided to try it out with the oak tree bark mat. Since the mat is so deep and detailed I knew I needed a very thick layer of buttercream to start. I added approximately a 1/3" thick layer of buttercream to the outside of the cake. I made sure the top was smooth how I wanted it. Then semi smoothed the sides. I didn't get super picky on this. Just a quick smooth. Sorry I forgot to take a picture at this stage.
Then in the freezer the cake went. I wanted it nice and cold but not frozen. In my freezer I left it about 15-20 minutes. I wanted the cake firm enough that it took some pressure to dent when I touched the side of the cake but would move some.
Take the cake out of the freezer and lay the texture mat next to the cake and very firmly and evenly press the mat into the cake. I was by myself so not the best picture. Press firmly. You can use a fondant smoother to make sure it is evenly pressed. When you have the nice thick buttercream layer and you are pushing on it like this it will force some of the buttercream up above the top edge of the cake. I liked this look and played while pushed to get the somewhat rough top edge that bark would give.
Gently pull the mat away. I did get some of the buttercream stuck in the deep crevices but only after the cake has been out a while and I kept futzing with the cake.
The buttercream really picks up the details!
Quick airbrush with some various browns.
Add some grass and butterflies and I'm all done!
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