- In a deep sautué pan over medium heat, warm the olive oil and butter. 
- Season the chicken with salt and pepper. Add the chicken to the pan and brown on all sides, about 7 minutes. Transfer to a platter. 
- Add the onion to the pan and cook until tender and translucent, about 4 minutes. Add the chicken, garlic, thyme, wine, stock, cumin and Worcestershire and bring to a boil. 
- Reduce the heat to low, cover and simmer until the juices run clear when the chicken is pierced with a knife, about 30 minutes. Serve immediately.