In a large mixing bowl, combine peanut butter, ricotta cheese, pumpkin pie syrup and sweetener, mixing until blended well. Gradually add protein powder, stirring until evenly mixed. Add food coloring until the mixture reaches desired shade of orange. Using a tablespoon, mold into balls and place onto cookie sheet lined with wax paper. If using, place desired coating in a small bowl, and coat truffles one at a time. Refrigerate until ready to serve. Per serving: 80 calories, 5 grams fat, 1.4 grams saturated fat, 60 mg sodium, 3 grams carbohydrate, 0 fiber, 3.5 grams sugar, 6 grams protein. Recipe courtesy of Times Picayune Newspaper.