Preheat the oven to 350 degrees and line a baking sheet with parchment paper.
In a medium mixing bowl, mix together all of the cookie base ingredients together until a wet dough forms. Roll into 1 tablespoon dough balls and place on a baking tray, flatten to make each cookie about ½” thick and as round as possible.
Bake the cookies on the bottom rack of your oven for 8-10 minutes until the base is a light brown color.
Remove the cookies from the oven and let them cool.
In a medium bowl, add the marshmallows and water and place them in the microwave for 30 seconds until they poof up or rise and become gooey. Add another 20 seconds if needed.
Scoop out 2-3 tsp of the marshmallow mixture on top of each cookie base with a spoon. If the marshmallows start to harden, place them back in the microwave for 10 seconds.
In a small bowl, melt ½ cup of chocolate chips by putting them in the microwave for 30 second intervals and mixing at each interval. If not fully melted after 30 seconds, put chocolate back in the microwave for another 30 seconds.
While still on the baking sheet, pour the melted chocolate over the marshmallow cookies covering them fully using a spoon if you need to to spread it and get the base of the cookie. Continue until all cookies are covered. If you run out of chocolate, melt another ¼ cup of chocolate chips.
Then place the chocolate covered cookies on a plate or baking drying rack with parchment paper underneath to catch any dripping chocolate. Place cookies in the fridge for 15 minutes so chocolate can harden.
Remove cookies from the refrigerator and ENJOY!