Preheat the oven to 350 degrees F.
In a medium size mixing bowl, add sugar, eggs and peanut butter. With a large sturdy spoon, mix together.
Before rolling the cookie dough into balls, rub a small amount of flour on your hands.
Roll the dough into balls (a little bit larger than a whole walnut) and place them onto an ungreased cookie sheet.
Leave a little bit of empty space in between each dough ball (the cookies will need to be baked in batches).
Bake in a preheated oven. Make sure to watch them closely because the bottom of the cookie can brown really fast while the top of the cookie doesn’t tend to brown.
After 6 minutes in the oven, use a spatula to slightly lift one of the cookies and check the brownness making sure they’re not getting too dark.
Bake until the bottom of the cookies are a deep golden color (in total about 10 minutes).
As soon as the cookies come out of the oven, while they're still warm and on the cookie sheet, put one chocolate Kiss candy on top of each cookie, in the middle, and gently push it slightly into the cookie.
Transfer the cookies from the pan onto a cooling rack and let cool.
As the cookies cool and become firm, and the chocolate candy Kiss should harden back up again.
Serve slightly warm.