Preheat oven to 500° F. In blender or food processor, combine Mann’s Broccoli Cole Slaw®, cooked brown rice, kidney beans, mushrooms, Parmesan cheese, egg whites and taco seasoning.
Process, scraping down the sides of the bowl with a rubber spatula until all ingredients are finely chopped and well blended. Form mixture into 4 equal patties and place on a lightly oiled baking sheet.
Bake until patties are firm and brown on the edges, about 10 minutes. Alternatively, patties can be pan-fried in a skillet for 3-4 minutes per side. Serve on crusty bun, garnish with lettuce and tomato.