For me, the humble peanut butter and jelly sandwich is one of them. It’s the lunchbox staple I never got tired of as a kid and still turn to today when I need something quick, familiar and comforting.

A new, better-for-you food company hit Walmart stores. Jams stakes a claim that it is a protein packed and health-forward snack. Each sandwich contains 10g of protein. A 4-count box retails for just ...