My son LOVES Legos and wanted them for his Birthday cake. I found a tutorial at the Betty Crocker website that had the knobs made out of large marshmallows. I baked the cakes in a bread pan instead of cutting a 13x9 up like the site said too. I had to rush the frosting because I got a last minute notice that someone was coming to see our home that was for sale in an hour. I had to rush a bit!