Once your mixture has thickened, set the mixer aside and pull out the oil again. Oil a spatula (and here I went ahead and oiled my hands as well) and use the spatula to scrape the stuff into the already oiled and sugared 9×9 inch pan. You can leave the top of the mixture gloppy if you want, that kind of home-made texture is fun, but you could also use the oiled spatula to smooth the top of the marshmallow mix in the pan. Next oil a piece of saran wrap and cover the marshmallows and set aside for two hours. I needed to get on with dinner, so I actually put mine in the fridge overnight (otherwise we get ants) and that worked just fine for us.