In a blender or food processor, add the artichoke hearts, brown rice, nutritional yeast, sunflower seeds, parsley, miso, Dijon mustard, Old Bay Seasoning, garlic, black pepper and vinegar. Puree to mix ingredients but don't over blend. You want the mix to have texture and be a bit lumpy.
Once the mix is coming together, add the oats and pulse a few times to mix them in.
Refrigerate for one hour.
After chilling, scoop out the mixture to form patties using your hands. About 1/2 cup for a burger size. A 1/4 cup for a sliders.
To cook: Heat a nonstick skillet over medium heat. Wait for it to get hot and spritz with water. Add the patties and cook 5 - 7 minutes on the first side and then flip and cook the second side until it is golden. Keep spritzing with water if they begin to stick.
Serve as an appetizer with sugar-free ketsup or the fixings of your choice.