I have a question along the same topic... I have a favorite old recipe (not on SP) that I have made a modification to. I know it has significantly less calories, fat and sodium because I omit the 1 & 1/2 pounds of 90% lean ground beef and use 12oz of Boca Crumbles instead. I am not a mathmetician by any means and cannot figure out how to modify the nutrition facts. Is there an easy way to figure this out?... I feel lame for even asking.
Original recipe nutrition facts: 1 serving equals 369 calories, 15 g fat (7 g saturated fat), 86 mg cholesterol, 837 mg sodium, 30 g carbohydrate, 7 g fiber, 32 g protein.