Yeah, i would grate, actually i just went back to the original source, and from her piccies, she grated.. i think regular cheese would melt in a instant and not last the hour !!! Reason they are suggesting cheddar. TBH, this cheese (blue box) is just divine...i make a mashed potato bake with it all infused in the mashed potatoes, and whilst is nice and fattening...its so delicious.