How to Make It
Heat oil in a large Dutch oven over high. Add beef, and cook 8 minutes or until browned on all sides, turning occasionally. Place on a plate.
Add onion, poblano, and garlic to Dutch oven, and cook 5 minutes, stirring frequently. Add oregano, tomato paste, and cumin, and cook, stirring constantly, 1 minute and 30 seconds. Stir in stock, paprika, vinegar, brown sugar, Worcestershire, salt, and cinnamon sticks; bring to a boil. Reduce heat to medium. Add browned beef, cover, and simmer 45 minutes or until beef is tender, stirring occasionally.
Remove cinnamon sticks; discard. Stir in beans; serve. Sprinkle each serving with shredded cheese and chives.