Hi Priscilla! Baking soda is often added to brittles or potentially hard caramel-like confections because it makes them a little easier to bite through. Since granola is usually bound by a caramel-like mixture of honey, maple syrup, and/or brown sugar, the baking soda helps prevent it from getting too hard, making the granola easier to chew with a more delicate texture. It's the little bubbles produced by the baking soda that break up the caramel's structure that do the trick. Annabelle@KAF

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