1. Slice the onions and mince the garlic.
Cut the chuck into cubes.
2. Heat the butter and oil in a Dutch oven over medium heat.
3. Sear the beef on all sides.
4. Add the onions and garlic and sauté for 5 minutes, stirring.
5. Add the tomato paste and mix to coat the meat well.
6. Deglaze with red wine and let it reduce for 5 minutes over low heat.
7. Pour in hot beef broth to cover the meat.
8. Add the thyme and rosemary. Season with salt and pepper.
9. Cover and let simmer over very low heat for 3 hours.
10. Bring salted water to a boil in a saucepan and add the rice.
Shred the meat using 2 forks and let the sauce thicken for 10 minutes.