It was lunchtime, and their children wanted peanut butter and jelly sandwiches with the bread crusts cast aside. Geske’s wife, Kristen, and Kretchman’s wife, Emily, witnessed the meal preparation.

The grilled peanut butter and jelly sandwich, then? It's such an overwhelmingly sensible idea — inevitable, even — that it's a wonder you don't see it all over the place. It's as simple as it sounds: ...