Back-to-school for kids means back-to-bake-sales for parents. These bars will earn adults an A+, because they're a cinch to make and very wholesome (they're also nut- and gluten-free).
Preheat oven to 350 degrees. In a large bowl, combine granola, cereal, cherries, chocolate chips, and salt.
In a separate bowl, whisk together honey, egg whites, and butter.
Stir honey mixture into cereal mixture to combine, then press firmly into a parchment-lined 9-by-13-inch baking pan. Bake until golden and firm, 35 to 40 minutes. Let cool completely, then lift out of pan and cut into squares. Store at room temperature in an airtight container up to 3 days.
For uniform bars, slice into quadrants, then cut each quadrant into squares.