Is there a way to keep Totino's Pizza Rolls from opening and spilling contents in the oven, or is that just what they do? We normally cook half the bag at 425° for 14min, which is following the instructions on the bag almost completely (we add one minute because we like them well done). 
I've had this issue for years, and only recently found the solution! I just bought a microwave/convection/air fryer, and discovered when I heat the pizza rolls using the air fryer setting, the pizza rolls come out perfectly crispy, hot, and best of all, completely intact with all the filling!! Yay!! Hope it works for others who have struggled w this wonderful little snack  