Many dishes were ruined 'cosbecause my toaster oven temperature was off. FinallyI finally checked it out with a digital & an oven thermometer(s). Now I manually adjust the temperature & dishes turn out to be better. Invest in a reliable oven thermometer to avoid wasting money on ruined dishes.
See my posted picture for detailed examples.
https://i.sstatic.net/Vl1ZQ.jpg Good luck