Add the onion and the extra virgin olive oil to a pot and let them sauté.
Clean your drumsticks, removing any extra fat.
Add the chopped tomatoes to the pot with onions, and season.
Add the thyme and bay leaves in the same pot.
Add the wine and leave to evaporate.
Lower the heat, cover with a lid and leave to simmer for 20 minutes.
In the meantime, pan fry the outer skin of your drumsticks.
Once done, layer the drumsticks into your casserole.
As soon as it has finished simmering, top the drumsticks with the onions in tomato.
Cover with foil and bake in the oven for 45 minutes.
After 45 minutes, take the casserole out of the oven and serve. See notes.
Notes
You can serve this with a side of vegetables, with some rice, or potatoes. You'll have plenty of leftovers to make a delicious pasta the next day, or that same day if you are feeling very peckish.