These are the type of onions that are so full of flavor and so jammy too. You can prepare the very best onion soup with these onions and they go especially well with steak. Very easy to prepare they just take 1/2 a day to cook so make a big batch. It melts down a bunch and you can freeze or can it in batches.
Onions Confit are cooked in fat so you will need saved beef fat for Roasted Onions Beef Confit Style.
Traditional Confit onions are cooked 8-12 hours at 200 degrees F. I find that I get the same results doing it at #350 degrees F for about 4 hours.
Set your oven to 350 degree F
Use beef fat you saved from something like a smoked brisket
You need about a teaspoon of peppercorns, around seven bay leaves and a big splash of wine or wine and balsamic vinegar. Now fill your pan with sliced halved onions like this.
Drizzle them with extra virgin olive oil and cover them with aluminum foil.
Depending on the size of your onions and how many are in your pan they will need 3-31/2 hours in your oven covered.
They are pretty good like this after 3 1/2 hours
Then uncover them and they might need another 1/2 hour.
But here they are even better and are very jammy.
Get the onions out with a slotted spoon and throw out the peppercorns and bay leaves. Everyone loves these onions.