Steps
1. Heat olive oil in a pan over medium heat. Season the chicken breast with salt and pepper.
2. Sear the chicken breast on both sides until golden brown. Remove from the pan and set aside.
3. In the same pan, add the diced onion, minced garlic, carrot, and celery. Cook until vegetables are softened.
4. Pour in the red wine and bring to a simmer. Add the bay leaf and thyme sprig.
5. Return the chicken breast to the pan and cover with the wine mixture.
6. Reduce the heat to low, cover the pan, and let the chicken braise for about 20-25 minutes or until cooked through.
7. Remove the chicken from the pan and let it rest for a few minutes before slicing.
8. Strain the braising liquid and return it to the pan. Simmer until the sauce has thickened.
9. Serve the sliced chicken with the red wine sauce.