Start by preheating the oven to 350 F.
Next, line a baking sheet with parchment paper and set aside. I recommend spraying the baking sheet first, so that the parchment paper sticks to it.
Then, prepare the flax egg. In a large bowl, whisk together the flax meal and water, and let it sit for about 3-4 minutes, until it thickens.
Add the peanut butter, maple syrup, and vanilla extract to a bowl, and stir to combine.
Then, mix in the oat flour, cocoa powder, and salt. Combine until a dough forms.
Next, scoop about 2 tablespoons of cookie dough into your hands and roll to form a ball.
Pour your sprinkles into a small bowl and roll the cookie dough balls inside.
Place the cookie dough balls onto your prepared baking sheet, and use your thumb to press an indentation into the cookies. They won't spread too much while baking, so don't worry about them being too close together!
Bake your cookies for 8-10 minutes.
Once your cookies are done, remove them from the oven and press a Hershey's Kiss into the center of each cookie.
Immediately place the tray of cookies into the fridge, so that the chocolate doesn't melt over the cookies.
Once the cookies are completely cool, take out of the fridge, eat, and enjoy!