A low-calorie nutrition energy food bar with high fiber and reduced sugar alcohol contents, which have excellent flavor and multi-texture properties, is provided. The food bar has less than 110 Cal/28g serving, and includes a core component comprising, as a unitary matrix, protein crisps, caramel, water-soluble dietary fiber, and a binder system; a caramel component; and the core component and caramel components are enrobed with a compound coating layer. The low-calorie food bar has a high protein core component and a caramel component formulated with high water-soluble dietary fiber content which is cohesive, crunchy yet soft/moist enough to be chewable, and flavorful throughout the product's shelf life.