Baked Chicken Breast: Juicy at 400°F, With Timing Chart

How Long to Bake Chicken Breast

Boneless, skinless chicken breasts bake at 400°F (200°C) for 16 to 26 minutes, depending on size: about 16–18 minutes for small breasts (5–6 oz), 18–22 minutes for medium (7–8 oz), and 22–26 minutes for large (9–12 oz). Pound them to an even ¾-inch thickness first, as the recipe below does, and almost any breast finishes in 15–18 minutes. Time is only an estimate, though — the breast is done when an instant-read thermometer inserted into the thickest part reads 165°F (74°C), the USDA minimum for poultry. Then it rests for 5 minutes before you slice.

That's the whole answer, and it's also why so much baked chicken comes out dry: people cook to the clock instead of the temperature. A 5-ounce breast and a 10-ounce breast can sit side by side on the same sheet pan and finish eight minutes apart. The recipe below builds in the three things that actually guarantee juicy chicken — even thickness, a hot oven, and a thermometer — and the timing chart gives you honest ranges for every size and oven temperature.

Why 400°F Is the Right Temperature

You can bake a chicken breast anywhere from 350°F to 425°F and get it safely done. We land on 400°F because it's the best trade-off between speed and moisture:

• Hot enough to cook fast. Chicken breast is lean, and lean meat dries out the longer it spends in the oven. At 400°F, a pounded breast is done in under 20 minutes — before the exterior has time to turn leathery.
• Not so hot that the outside races ahead. The hotter the oven, the wider the gap between surface and center. By 425°F you have to watch thin breasts closely, and past that the surface tightens before the middle reaches 165°F. At 400°F the gradient stays manageable.
• Enough browning to taste like something. Below 375°F, the surface barely colors and the chicken tastes steamed. At 400°F you get light browning and a rub that toasts instead of just drying out.

Lower temperatures aren't wrong — they're just slower, and slower means more time for moisture to escape. If a casserole or tray of vegetables already has your oven at 375°F, bake the chicken alongside it and simply extend the time (chart below). The thermometer, not the temperature setting, decides when it's done.

The Recipe: Juicy Baked Chicken Breast at 400°F

Serves: 4 · Hands-on time: 10 minutes · Bake time: 15–18 minutes (pounded to ¾ inch) · Rest: 5 minutes

Ingredients

• 4 boneless, skinless chicken breasts (6–8 oz each, about 1¾ lb total)
• 1 tablespoon olive oil
• 2 teaspoons Morton kosher salt (see the salt note below)
• ½ teaspoon black pepper
• 1 teaspoon paprika
• ½ teaspoon garlic powder
• ½ teaspoon onion powder (optional)

A note on salt. Salt brands differ enormously by volume, so the brand matters more than the spoon. These amounts all work out to roughly the same 9–10 grams of salt for 1¾ pounds of chicken — about a teaspoon of Morton kosher per pound, the standard seasoning rate for lean meat:

• Morton kosher salt: 2 teaspoons
• Diamond Crystal kosher salt: 3½ teaspoons (its flakes are much lighter, so it takes nearly twice the volume)
• Fine sea or table salt: 1½ teaspoons

The rub is deliberately simple and endlessly swappable — Italian herbs, chili powder, lemon pepper, curry powder. Keep the salt amount the same and change everything else to match dinner.

Step-by-Step Method

1. Heat the oven to 400°F (200°C) with a rack in the middle position. Let it fully preheat — a half-heated oven stretches the cook time and dries the meat.
2. Pound the breasts to even thickness. Place each breast between two sheets of plastic wrap or parchment and pound the thick end with a rolling pin, skillet, or meat mallet until the whole breast is about ¾ inch thick. This is the single most important step in the recipe. Chicken breasts are wedge-shaped; without pounding, the thin tail overcooks while the thick end is still raw.
3. Dry the surface. Pat each breast dry with paper towels. A dry surface browns; a wet one steams.
4. Oil, then season. Rub the breasts all over with olive oil, then sprinkle the salt, pepper, paprika, garlic powder, and onion powder evenly over both sides. Two teaspoons of Morton kosher salt across four breasts works out to about ¼ teaspoon per side — the amount a 7-ounce breast comfortably takes. The oil helps the spices stick and carries their flavor.
5. Arrange with space between. Place the breasts on a rimmed baking sheet or in a baking dish with at least an inch between them. Crowded chicken traps steam and won't brown.
6. Bake 15–18 minutes. That is the window for breasts pounded to ¾ inch, whatever they weigh. If you skipped the pounding, use the size chart below instead and expect 16–26 minutes. Either way, start checking the temperature at the low end of the range.
7. Pull at 165°F (74°C) in the thickest part, measured with an instant-read thermometer inserted from the side into the center. If it reads low, return the pan for 2–3 minutes and check again.
8. Rest 5 minutes on the pan or a cutting board, loosely covered with foil. Resting lets the juices redistribute so they end up in the meat, not on the board. Slice against the grain and serve.

Baked Chicken Breast Timing Chart

All times assume boneless, skinless breasts straight from the refrigerator in a fully preheated oven. Always confirm 165°F (74°C) with a thermometer.

By Size at 400°F

The size rows describe breasts left at their natural wedge shape. If you pounded them as the recipe directs, the last row is the one that applies to you.

By Oven Temperature (7–8 oz breast, unpounded)

Pounded breasts run a few minutes shorter than these figures at every temperature. Two other things move the numbers: starting temperature and thickness. Breasts that sat at room temperature for 15–20 minutes cook a little faster; extra-thick, unpounded breasts cook slower and less evenly. When in doubt, trust the thermometer over the clock.

The Thermometer Rule: 165°F, No Guessing

The USDA minimum internal temperature for all poultry is 165°F (74°C). That number is the entire food-safety story for this recipe, and it's also your insurance against overcooking — most dry chicken was cooked well past 165°F by someone guessing.

A few practical notes:

• Measure the thickest part. Insert the probe horizontally from the side of the breast so the tip sits in the center of the thickest section, not poking through to the pan.
• Check every breast. Different sizes finish at different times. Pull each one as it hits temperature rather than waiting for the largest.
• Color is not a doneness test. Perfectly safe chicken can show a slight pink tinge just under the surface or in the thickest part, and overcooked chicken can look pale. Cutting into a breast to peek also lets the juices run out. The thermometer answers in ten seconds.
• Expect a small rise during the rest. The internal temperature typically climbs a few degrees after the chicken leaves the oven, which is one more reason not to push past 165°F "just to be safe."

Optional Upgrade: A 15–30 Minute Brine

If you have a spare 15–30 minutes, a quick brine makes chicken breast noticeably juicier and more forgiving. Dissolve 2½ tablespoons Morton kosher salt — or ¼ cup Diamond Crystal kosher, or 2 tablespoons fine salt — in 1 quart (4 cups) of cold water, submerge the breasts, and refrigerate for 15–30 minutes; no longer, or the texture turns spongy. Rinse, pat completely dry, and skip the salt in the rub (keep everything else). The brine seasons the meat throughout and helps it hold moisture through baking.

This step is genuinely optional. Pounding to even thickness and pulling at 165°F do more for juiciness than any brine, but the three together are how you get chicken worth eating without sauce.

What to Serve With Baked Chicken Breast

Baked chicken is a blank canvas, which is exactly why it belongs in the weeknight rotation. A pot of perfectly cooked stovetop rice started right when the chicken goes in will finish at almost the same moment — rice takes about 18 minutes plus a rest, pounded chicken 15–18 minutes plus a rest. Add a vegetable roasted on the same sheet pan (broccoli and green beans both handle 400°F well) and dinner is one pan, one pot.

Sliced and chilled, the same chicken becomes the week's meal prep: grain bowls, salads, wraps, and quick quesadillas. And since the oven is already hot, this is a good night to reward yourself — a loaf of one-bowl banana bread bakes at 350°F, so slide it in after the chicken comes out and let the oven cool to temperature. More reliable mains live in our Weeknight Dinners collection.

Storage and Reheating

• Refrigerate within 2 hours of cooking, per USDA guidance. Store in an airtight container for 3 to 4 days.
• Freeze sliced or whole breasts for up to 3 months for best quality. Wrap tightly or freeze in a zip-top bag with the air pressed out; thaw overnight in the refrigerator.
• Reheat gently. Chicken breast dries out fast on a second trip through high heat. Reheat covered in a 300°F oven with a splash of broth or water, or in the microwave at half power, until warmed through — reheat leftovers to 165°F. Better yet, use cold sliced chicken as-is in salads and wraps and skip reheating entirely.

Troubleshooting Dry or Uneven Chicken

• Dry and stringy: It cooked past 165°F. Start checking earlier, at the low end of the time range, and check every breast individually.
• Thick end raw, thin end dry: The breast wasn't pounded even. Next time, flatten to ¾ inch — it also cuts the bake time.
• Pale and steamed-looking: The surface was wet, the pan was crowded, or the oven wasn't fully preheated. Dry the breasts well and give them space.
• Bland: Underseasoned, most likely. A 7-ounce breast comfortably takes ¼ teaspoon of Morton kosher salt per side — half a teaspoon per breast, which is where the recipe's 2 teaspoons for four breasts comes from. The quick brine seasons deeper than any surface rub.

Bake it once with a thermometer in hand and the guesswork mostly disappears: 400°F, even thickness, 165°F in the center, five minutes' rest. Ovens still vary, and so do breasts — that's exactly what the thermometer is for.