Ok a while back we had a tator Throw Down and I was thinking a Salisbury Steak and Mashed Tator fattie, well I finally done it! I mixed the hamburger much to the same as meatloaf then rolled out one pound in a gallon bag. Next I smeared mashed tators on it some mushrooms and cheese ( can't have a fattie without cheese ) and then drizzled brown gravy all over everything. When I rolled it some onion and gravy and mushrooms found their way out so I left it on the fattie just to see what would happen.
Experienced fattie makers will see my mistake instantly, for those of you not so verse in fattie making I have only one thing to say: PUT THE SEAM ON THE FLIPPIN BOTTOM!!!
My wife's fattie ( she doesn't do shrooms or brown gravy ) was same meat mixture with tators butter and cheese. It came out normal