Cream butter and sugar until pale and fluffy, then add the vanilla essence.

Sift the flour and cocoa powder into the butter mixture and knead until the dough does not stick to the sides of the bowl.

Put aside the dough for ten minutes.

Roll the pineapple jam into small balls.

https://cookpad.wasmer.app/us/recipes/366184-pineapple-jam

Press some dough into your palm and wrap the pineapple jam into the dough.

Bake at 160℃ in preheated oven for twenty minutes or until it is crusty to the touch.