Mix the butter (room temperature-easy to mix) with the sugar for 5 minutes.Add the peanut butter and mix for a minute.

Add the two eggs and mix until became creamy.Mix in a bowl the baking powder and the flower.

Sift the flour little by little and mix with until became sticky, add the drops and mix again.

Pre-het the oven (up and down) at 220 C

You must have your hands wet with warm water to manipulate the dough.Make medium balls and put them in the tray (use paper for the oven) and flatten them.Decorate with a couple of drops.
You can try different sizes.If you make medium sizes cookies it will take about 17 minutes until brown.
Don´t bake them too much or they will became hard (When you take them out of the oven they are soft and must cool them down to be ready)