Peanut butter cookies

Hi love! Let's make some cookies, only this time it's peanut butter. This is mom's old recipe when she was young and now it's my turn to inherit this from her. I made these first time on last raya and I got credits by almost everyone who tasted it. *big grin*
Let's prepare :-
2 cups of margarine (but I prefer using buttercup)
2 cups of fine sugar
4 cups of flour
2 cups of tapioca flour
2 eggs yolk
1/2 bottle of peanut butter(u may have one bottle if it's small size)
vanilla essence
1/4 tsp baking powder
raisins for garnish

Methods:-
Mix butter, sugar, egg yolk and vanilla essence together. Then add in peanut butter, followed by flour, tapioca flour and baking powder. Mix them until blended. Put in the mold and bake for 20-30 minutes.