For the Dutch oven method, quickly remove the Dutch oven from the oven and immediately close the door — you lose a lot of heat whenever that door opens. (userealbutter.com)
This same oven method can be used for the homemade marshmallow version as well. (bakersroyale.com)
We do not, so we used our stovetop and oven method for making grilled cheese. (alittlesaffron.com)