When you develop a recipe, how do you choose a good oven temperature? What are some general guidelines? What type of dishes or ingredients would prompt you to choose a specific oven temperature? What about higher temperature vs. longer cooking time?
Background: I'm asking because I just cooked a vegan "gratinated" dish for 70 minutes and everything turned into a mush! Should I have selected 250°C instead of 220°C to facilitate faster evaporation?
(Speaking of °C, if you could give °C that would simplify reading for me but I will convert the temperatures myself if you won't.)
Many thanks in advance!