Bake boneless, skinless chicken breasts for about 18–30 minutes depending on oven temperature and thickness, and always cook to an internal temperature of 165°F (74°C).

Quick Scoop

  • At 350°F (177°C):
    • Small 4 oz breast: 20–30 minutes.
  • At 400–425°F (204–220°C):
    • Medium breast: 18–25 minutes.
  • At 450°F (232°C):
    • Medium 8 oz breast: about 20 minutes; large 12 oz: about 30 minutes.
  • Always check doneness with a thermometer: center should hit 165°F (74°C).

Simple step-by-step

  1. Preheat oven to 400–425°F (204–220°C).
  1. Pat chicken dry, rub with oil and seasoning.
  1. Bake 18–25 minutes, depending on thickness, until it reaches 165°F in the thickest part.
  1. Let rest 5–10 minutes so juices redistribute.

Handy time guide by thickness

  • About ½ inch thick: 15–18 minutes at 400°F.
  • About ¾ inch: 18–20 minutes.
  • About 1 inch: 20–25 minutes.
  • Very thick (1½ inches+): 25–30 minutes.

Aim for time as a rough guide, but let the thermometer be the final judge for juicy, safe chicken.

TL;DR: For typical boneless chicken breasts, bake at 400–425°F for 18–25 minutes, then confirm 165°F in the center before serving.