Can chefs create recipes simple enough for home cooks? 23 food pros met our summer challenge Chef Justin Pichetrungsi’s ice cream sundae, with fried bananas and a Thai tea caramel sauce.

CHICAGO -- Eleven-year-old Jaheim Hall said he dreams of being on Gordon Ramsay’s “MasterChef Junior,” a cooking competition where the stakes are high and the pressure is on to impress one ...