You may or my not choose to stuff your Sausage Fattie. The sausage roll is ready to go straight to the BBQ/Grill if you prefer. I include this section to give you a few ideas of what you might want to try in your Sausage Fattie. Here's where your own imagination and creativity can come into play.
Mushroon and Sweet Onion, finely chopped and sliced. The onion and mushroom shown here is actually way too much for one Fattie.
The Sausage roll was flattened out on a piece of plastic wrap. The mushroom and onion was placed on the sausage, and the plastic wrap helped
I had a package of frozen Roasted Hatch Green Chili Peppers from last year's crop. Hatch Chili's from Hatch, New Mexico are very popular in this part of the country. These were roasted, the skins removed, diced and packaged for the freezer. Form the roll into a "boat" shape, into which you can insert the Chili's. I added a bit of the chopped Sweet Onion, as I had so much already minced up. The plastic wrap again helps shape the sausage back into a roll shape.