caramelized onion with cheese and garlic from @ericlahuerta

1. peel and cut the onion into thin strips and the mushrooms into slices. 2. In a pan with plenty of oil, add the onion with a little salt and pepper. 3. Cook over low heat until the onion is well caramelized (about 1 hour of cooking). 4. Then add the mushrooms and cook for 5 more minutes and set aside. 5. Cut the top of the garlic heads. 6. Add salt, pepper, and extra virgin olive oil. 7. Wrap the garlic heads in aluminum foil and bake for 40 minutes at 220 degrees. 8. After the time, in a bowl put the confit garlic, extra virgin olive oil, salt, pepper, and mix to integrate all the ingredients well.