Question: can pyrex go in the oven at 350?
Answer: The folks at Pyrex address this on their Web site. Here's their advice: “If you're cooking in glass, set the temperature to 25 degrees lower. Glass holds heat better, so you don't need as much of it.” ... It shows a sheet cake baked in metal at 350 degrees, in glass at 350 degrees and in glass at 325 degrees.