Wash and peel your onions.
Slice the onion. I recommend using a food processor.
Melt the butter in a Dutch oven over medium high heat.
Transfer of the onion into the Dutch oven. Cook for 10 minutes and stir and every 3 to 4 minutes. Don't worry it may seem like a lot of onion , but it will shrink.
Change the heat to medium-low. Cook for another 35 to 40 minutes stirring every five minutes.
The onion should be golden brown . The onion should have shrunk.
Add thyme , pepper, beef broth and water all at once. Stir to combine.
Cover and bring to a boil.
When it is boiling lower the heat and let it simmer for 15 minutes.
Serve with french bread and cheese. Enjoy!