You can either serve them like this, as two separate cakes, or place both in the fridge to chill for 1 hour, then carefully remove one from the cake board stack on top of the other.
This recipe uses raw eggs which may be an issue for some. You can use pasteurized if you prefer. Raw eggs should not be consumed by pregnant women, small children, or anyone with health issues.* A cold bowl will help the frosting whip up better. ** Do not skimp on this! It takes a long time, but this is what helps give it the proper texture. *** You will have a bit of frosting left over. You can use this to add more frosting to the cake if desired, or spoon into small bowls and serve as mousse.French Silk Pie filling recipe from Martha Stewart.