Combine onion, thyme, sugar, salt, nutmeg and TABASCO® Habanero Sauce in a small bowl and set aside. Pierce chicken with tines of a fork and place in a shallow dish. Spoon or rub seasoning mixture over both sides of each breast half and let marinate for 20 to 30 minutes.
Heat butter and oil in large skillet over medium heat. When bubbling, add chicken and cook 5 to 10 minutes on each side (depending on size of chicken breasts) until browned and no longer pink inside. Serve with rice.
Makes 4 servings.