Cook Freekeh according to package directions in vegetable broth (or water). Allow to cool and place covered in fridge for a minimum of 1 hour.
In food processor, combine sunflower seeds, pepitas, hemp seeds, chia seeds, and mushrooms. Using short, quick pulses, process until coarsely chopped. The mixture should resemble the consistency and texture of ground meat. Transfer to a large bowl.
Add Freekeh, shallots, tahini, breadcrumbs, cayenne and fresh ground pepper. Using hands, combine mixture until ingredients are well-blended and sticking together.
Shape mixture into 4 patties and place on plate. Cover with plastic wrap and refrigerate for a minimum 30 minutes to allow patties to set.
In large skillet, heat oil over medium heat. Cook burgers until golden brown, about 3 minutes per side.
Place on bread of choice and add favorite toppings. Also makes a delicious protein for salad.