1 tablespoon olive oil
4 boneless, skinless chicken breasts (about 2 pounds total)
1/2 teaspoon kosher salt, plus more for the chicken
1/4 teaspoon freshly ground black pepper, plus more for the chicken
1 cup low-sodium chicken broth
1/2 cup freshly squeezed lemon juice
8 cloves garlic, smashed
2 tablespoons unsalted butter, at room temperature
2 tablespoons all-purpose flour
Chopped fresh parsley leaves (optional)
- Heat the oil in a large skillet over medium heat until shimmering. Liberally season the chicken breasts on both sides with salt and pepper.
- Place the chicken in the pan and sear until browned on the bottom, about 5 minutes.
- Transfer the chicken seared-side up to a 6-quart or larger slow cooker in a single layer. Add the broth, lemon juice, and garlic.
- Cover and cook on the LOW setting until the chicken is cooked through, tender, and registers 165°F on an instant-read thermometer, 3 to 4 hours. Meanwhile, place the butter and flour in a small bowl and use your fingers to rub the flour into the butter; set aside.
- Transfer the chicken to plates or a serving platter. Pour the liquid and garlic from the slow cooker into a small saucepan and bring to a boil over medium-high heat. Add the butter mixture and whisk constantly until completely incorporated into the sauce.
- Cook, stirring frequently, until the sauce is thickened, 3 to 4 minutes.
- Pour over the chicken, sprinkle with parsley if desired, and serve.
Storage: Leftovers can be stored in an airtight container in the refrigerator for up to 4 days.