Fiber One - Lite Snacks, Cakes & Desserts Fiber One's lite snack bars, cakes & desserts are the sweetest way to stay on track! High in fiber, they help to keep you full & meet your fiber goals. Your stomach is rumbling. You need something to fill it. There’s only one set of numbers you need to remember: 90/10/1. 90 calories, 10 grams of protein , 1 gram of sugar. These are the numbers for Protein One. A protein bar …