4 (6-ounce) skinless, boneless chicken breast halves
1/2 teaspoon kosher salt, divided
1/4 teaspoon freshly ground black pepper
2 tablespoons all-purpose flour
3 tablespoons olive oil, divided
3/4 cup frozen pearl onions, thawed and drained
8 ounces quartered button mushrooms
2/3 cup brandy
1 cup unsalted chicken stock (such as Swanson)
2 teaspoons cornstarch
1 tablespoon butter
1 teaspoon fresh thyme leaves

4 (6-ounce) skinless, boneless chicken breast halves 1/2 teaspoon kosher salt, divided 1/4 teaspoon freshly ground black pepper 2 tablespoons all-purpose flour 3 tablespoons olive oil, divided 3/4 cup frozen pearl onions, thawed and drained 8 ounces quartered button mushrooms 2/3 cup brandy 1 cup unsalted chicken stock (such as Swanson) 2 teaspoons cornstarch 1 tablespoon butter 1 teaspoon fresh thyme leaves

1. Cut each chicken breast half in half horizontally to form 8 cutlets. Heat a large skillet over medium-high heat. Sprinkle chicken evenly with 1/4 teaspoon salt and pepper. Place flour in a shallow dish; dredge chicken in flour, shaking off excess.
2. Add 1 tablespoon olive oil to pan; swirl to coat. Add 4 cutlets to pan; cook 2 minutes on each side or until done. Remove chicken from pan, and keep warm. Repeat procedure with 1 tablespoon olive oil and remaining 4 cutlets.
3. Add remaining 1 tablespoon oil to pan; swirl to coat. Add pearl onions and mushrooms; sauté 6 minutes or until browned. Remove pan from heat. Carefully add brandy to pan; return pan to medium-high heat, and bring mixture to a boil. Cook until liquid almost evaporates (about 2 minutes). Combine stock and cornstarch, stirring with a whisk until smooth. Add stock mixture to pan, stirring with a whisk; cook 2 minutes, stirring occasionally. Return chicken to pan; cook 1 minute. Remove from heat; stir in remaining 1/4 teaspoon salt, butter, and thyme.