Preheat the oven to 180ºC (350ºF) and line a baking sheet with a silicon mat or parchment paper.
In a bowl, combine peanut butter, sugar and eggs and mix well with a fork until the mixture thickens
Scoop out portions of 25 grams each (you can make them smaller or bigger as you please), flat them out and pinch the center with a fork.
Add the chocolate chips, ganache or nutella in the center and shape the cookies into a triangle by folding in the edges.
Place the cookies on the prepared baking sheet, leaving a gap in between so they can expand.
Bake in the preheated oven for 12 minutes (baking time may vary depending on the size of your cookies)
Cookies are done when they are lightly brown at the bottom and firm to the touch.
