I love LARA bars too! As my little got older and wanted more of the sweet style of granola bars that friends in lunch had, we've had to shift. Now we buy the KIND Dark Chocolate Chunk labeled "chewy with a crunch." They are lower in sugar and less processed, but they feel like a treat!
They're a little pricier but for some nutritious bars with no added sugar, I really like Dino bars! You can order through their store on Amazon too. Organic ingredients and wrapped in edible paper to avoid mess!
I have a super picky eater. I have to supplement him with Orgain Organic Kids Nutritional Protein Shake in chocolate. We have noticed so much growth in his build alone with development growth