Place your pocket on the rack (or foil). Set a timer for 20 minutes. No cheating. No poking it after 12 minutes like a maniac.
At the 15-minute mark, open the oven and give it a look. Is it getting nice and brown? If not, give it another few minutes. Ovens are like cats—they’re all a little different.
If you start to see cheese bubbling out of the crimp, congratulations. You’re doing it right. That’s the sign of a happy pocket.
Oven Bake Hot Pockets at Scott Sommer blog