1) Take a large pan and add olive oil to it.
2) Add the ground beef and onions and mix well.
3) Add all the ingredients to the beef and onion. Mix well together.
4) Let it simmer for 15-20 minutes.
5) Lastly add the can of diced tomatoes and give it a quick stir.
6) Cook for another few minutes.
7) Top it with some sour cream, cheese or green onion and serve hot.