These Sweet Potato Donuts with Marshmallow Glaze are a fun, quick-to-prepare spin on the popular Thanksgiving casserole.  I'll be honest: these donuts began as "Sweet Potato Donuts with Marshmallow Glaze and Roasted Pecans," because sweet potato casserole is totes not complete without pecans, right? Right. Well, I proceeded to burn the shit out of the pecans that