Spray an 9" by 11" rectangle pan and cover with parchment paper (leaving it longer on the sides for easy removal).

In a stand mixer with the whisk attachment, add gelatin and half the water (2/3 cup), making sure its cold.

In a saucepan bring the remaining 2/3 cup of water to a boil. Add the honey, vanilla, and salt and let boil for 1 minute. Then quickly add the water mixture into the stand mixer bowl and begin mixing together.

After about 1 minute, turn mixer onto high and beat for 8-10 minutes. The mixture should look thick and shiny. Almost as if you were mixing egg whites trying to get soft peaks.

Once it's done, quickly transfer to the pan, ensuring it's even. Let sit for minimum 2 hours, preferably 4-5 hours or overnight.

Once it is set, dust countertop with arrowroot starch or icing sugar, and flip marshmallows onto the counter. Cut into as many pieces as you desire! If they are not sweet enough for your liking, sprinkle more icing sugar overtop.