Preheat the oven to 350 degrees F.
In a medium size bowl, add the peanut butter, sugar and eggs. With a large sturdy spoon, mix together until incorporated and a dough forms.
Roll the dough into small balls (slightly smaller than a whole walnut). If the dough sticks to your hands, lightly dust your hands with flour.
Lay each ball of dough, spaced apart on an ungreased cookie sheet. If using a half sheet-size cookie pan (18 x 13 inches), 18 balls of dough should fit per pan.
Bake in a preheated oven. If using one cookie sheet, it will take 3 batches to bake all of the cookies.
While the cookies are in the oven, unwrap the candy kisses. An option is to unwrap just enough for each batch in case it turns out that less than a total of 54 (18 x 3 batches) cookies are made.
Bake just long enough for the bottom of the cookies to turn a golden color and for the middle of the cookie to be soft (about 15 minutes).
Be careful not to let the cookies bake too long (brown around the outside edges) or they'll be on the dry side.
Right after removing the cookies from the oven (while they're still warm and on the cookie sheet) gently push a candy kiss slightly into the top of each cookie. Do this as soon as possible because if the cookies start to cool, the candy kiss won’t stick (to the cookie).
Transfer the cookies to a rack and let cool before serving.