there’s tons of ways to do that… I don’t have any first hand experience with cooking them but I do have a lot of experience eating them. the squash flower is called “flor de calabaza” and its use is not limited to quesadillas. theres a delicious creamy soup you can make with them.
To answer your question, I’m pretty sure you should at least minimally cook the flowers/blossoms. If I were you I’d experiment. If I was trying for the first time I’d probably boil them.