Preheat oven to 400 degrees. Whisk together Egg Beaters, polenta, and cornstarch until well mixed, about 3 minutes.
Mix all remaining ingredients in a large bowl. Fold potato mixture into Egg Beaters mixture. Form into 8 patties.
In a hot skillet, spray Pam. Add patties and cook until brown. Flip and brown other side. Put patties on baking dish. Bake at 400 degrees for 10 minutes. Serve.