In a mixing bowl, combine the softened butter, minced garlic, chopped rosemary, thyme, sage, lemon zest, lemon juice, salt, and pepper. Mix well until fully blended.
Pat the turkey breast dry with paper towels. Gently loosen the skin over the turkey breast with your fingers, being careful not to tear it.
Spread about half of the herb butter mixture under the skin of the turkey breast, ensuring even coverage. Rub the remaining butter all over the outside of the turkey.
In a roasting pan, pour the chicken broth, and place the turkey breast on a roasting rack inside the pan, skin side up.
Roast in the preheated oven for about 1.5 to 2 hours, or until the internal temperature reaches 165°F (75°C). Baste the turkey with pan juices every 30 minutes for extra flavor and moisture.
Once cooked, remove the turkey from the oven and let it rest for at least 15 minutes before slicing. This allows the juices to redistribute.
Slice the turkey breast and arrange it on a serving platter. Drizzle with some of the pan juices and garnish with fresh herbs before serving.
Notes
Let the turkey rest before slicing to ensure juiciness.