Butter Baked Goods' Homemade Chocolate Sandwich Cookies

If I could marry a cookie and have little cookie babies with it, this recipe would be it. Back in October I received the Butter baked goods cookbook at the Food Bloggers of Canada conference, and over the past few months I've had a lot of fun baking out of it as much as possible.

This is hands down the best baking cookbook I've ever owned. Everything turns out not just good, but AMAZING,