STEP 4:
Pipe a boarder of frosting on the edge of the 1st layer of cake, fill with caramel sauce, then pipe another layer of frosting on top of caramel.
STEP 5:
Refrigerate cake for 15 min, and repeat with the 2nd layer. Then refrigerate for another 15 min, place the last layer of cake on top & refrigerate for 30 minutes.