Add in vanilla. Then add in your flour mixture and combine well.
Roll all cookie dough into balls. Take out your Nutella discs out of the freezer. I use a butter knife and quickly separate them from saran wrap. They thaw fast so you have to work quietly. I take the balls one by one and smooch them in my palm. Then put some Nutella on each cookie. I fold the disc in half to make it thicker. And roll it back up again.
Flatten cookies, using a fork, in a criss-cross pattern. Bake on cookie pan at 350F for 7-10 minutes depending on size of your cookies. Lucky saids finally, finally they are ready and my momma made special ones just for me hehe (aka plain peanut butter ones)
Mmmm look at that nutty chocolatey filled peanut butter cookie. Let us know what you think!