Am currently making pumpkin (and feta and spinach) muffins. Have only put a dozen in the oven (1 tray), and they were in there for 40 minutes at 170c fan forced, but they are still doughy. Is this a pumpkin muffin trait, or what? I am hot and a bit bothered today, I have been trying to make these for the last three days.

Have turned the oven off for now, as i have to go out for a bit, and don't have the time to wait 40+ minutes per tray of standard size muffins. Help gladly appreciated, head not working.