Preheat your oven to 400 and line a baking sheet with parchment paper.
In a bowl, cream together the shortening and sugars. Add the eggs, vanilla, and water and mix well.
Fold in the flour until you've got a stiff dough.
Use an ice cream scoop to get a ball of dough, roll it into a ball, and smash into your palm to flatten it.
Spoon a bit of hot fudge sauce in the center of the dough, then roll the dough back into a ball.
Roll the cookie dough balls in the sugar that you set aside earlier and place them on a baking sheet.
Bake for 6-8 minutes.
Let them cool on the sheet for 1-2 minutes before transferring to a cooling rack.
Enjoy!
Pro-tip: For an interesting twist, try replacing the hot fudge sauce with caramel sauce!