Recipe by @freshwaterpeaches
In a small bowl add all dry ingredients (first five), and whisk together until fully combined.
In a separate bowl add all wet ingredients (next three). Use a hand mixer to whip them until they are fully combined.
Add dry ingredients into the wet ingredients. Using a hand mixer, blend together until fully combined. (Use spatula to scrape edges.) Put the mixture into your fridge to set for 30 minutes.
After you remove the mixture from the fridge, set the oven to 325°. Cover a sheet pan with parchment paper, and spoon 1+1/2 inch balls onto the tray. It should yield 9 cookies.
After the cookies are on the tray, take your finger and lightly press them down into a circle. They wont expand much in the oven so make sure they're close to the shape you want them to be.
Bake for 8 minutes, remove them from the oven + add the marshmallow pieces on top! Put them back in the oven for 2-3 more minutes. Let them cool, then ENJOY!