How Long Do You Cook Baked Potatoes at 350? | Timing Guide

A medium-to-large russet baked potato typically takes 60 to 75 minutes at 350°F, with an internal temperature of 205–210°F as the best test.

You preheat the oven to 350, pop in a few potatoes, and wonder how long they actually need. The recipe says an hour, but yours feel hard after 60 minutes. Another batch comes out mealy after 90. The problem isn’t your oven — it’s treating time as a fixed number when potato size, variety, and starting temperature all shift the clock.

Here’s what matters most: 350°F is a forgiving heat that gives the starch time to turn fluffy without burning the skin. The honest answer lands between 45 and 90 minutes depending on your potato. Internal temperature, not the timer, tells you when it’s done.

Baking Time at 350°F: What the Range Means

Most sources land on 60 to 75 minutes for a standard medium-to-large russet potato. America’s Test Kitchen calls 75 minutes at 350°F the benchmark for a fully cooked potato with a soft, creamy interior and crispy skin. Bon Appétit agrees on 75 minutes for the same result.

Smaller potatoes (about 6 ounces or less) may cook in 45 to 55 minutes. Extra-large specimens (12 ounces or more) can push past 80 minutes. The Allrecipes version bakes potatoes directly on the center rack for a full 1 hour and 30 minutes, which suits bigger potatoes or a denser texture.

The safest approach: start checking at the 50-minute mark and rely on a thermometer from there. A single 350°F oven doesn’t change the rule that potato size varies more than most recipes admit.

Why the Time Varies So Much

Several factors stretch or shrink the bake time. Understanding them helps you adjust without guessing.

• Potato size and weight: A 6-ounce potato can cook in 50 minutes; a 12-ounce potato may need 90. Weight trumps diameter since thickness determines how fast heat reaches the center.
• Starting temperature: A cold potato straight from the fridge adds 10 to 15 minutes compared to one at room temperature. Let yours sit on the counter for 20 to 30 minutes before baking.
• Oven calibration: Many home ovens run 25 to 50 degrees off their setting. An oven thermometer is a cheap check that removes one variable.
• Rack position: Baking on the center rack allows even heat circulation. A lower rack risks a scorched bottom; an upper rack can over-brown the skin before the inside softens.
• Wrapping in foil: Foil traps steam and steams the skin rather than crisping it. It also slows cooking slightly since the foil reflects heat. Skip it for a fluffy interior.

The Right Temperature and Technique

Baking at 350 to 375°F produces a properly crisped skin and a creamy, fluffy interior in about an hour. Serious Eats recommends 350 to 375°F as the ideal baking temperature range, explaining that this moderate heat lets the starch granules fully hydrate and burst into fluffiness without the skin burning first.

Higher temperatures, like 425°F or above, cook the skin too quickly. The exterior may look done while the center remains firm and waxy. Lower temperatures, like 325°F, extend the bake time past 90 minutes and can dry out the interior before the skin crisps.

Internal temperature is the only reliable doneness test. The Idaho Potato Commission says 210°F means fully cooked. America’s Test Kitchen and Potato Goodness both target 205°F as the sweet spot for a uniformly fluffy interior. Insert a probe thermometer into the thickest part of the potato from end to end — if it reads 205 to 210°F, you’re done.

These ranges assume room-temperature potatoes on the center rack of a properly calibrated oven. A crowded baking sheet or cold starting temperature shifts times toward the upper end.

Steps for a Perfect Baked Potato at 350°F

Follow this sequence for consistent results.

1. Scrub and dry the potatoes thoroughly. Wet skin steams rather than crisps. Pat them dry with a clean towel after washing. Prick each potato three or four times with a fork to let steam escape.
2. Rub with oil and salt. A thin coat of neutral oil (canola or avocado) helps the skin crisp. Coarse salt sticks to the oil and adds flavor. Don’t wrap in foil.
3. Bake directly on the center rack. Place potatoes on the middle rack of a preheated 350°F oven. For easier cleanup, put a rimmed baking sheet on the rack below to catch any drips.
4. Flip once halfway through. About 30 to 40 minutes in, use tongs to rotate each potato 180 degrees. This promotes even browning on all sides.
5. Check internal temperature at 50 minutes. Insert a probe thermometer into the center of the largest potato. Done reads 205 to 210°F. If it’s not there yet, check again every 10 minutes.

More Tips for the Best Results

America’s Test Kitchen places potatoes on a wire rack set inside a rimmed baking sheet, which allows hot air to circulate underneath and produces even crisping. Their standard bake time at 350°F remains about 75 minutes at 350 for a properly cooked potato that’s soft and creamy inside.

Don’t cut into the potato right out of the oven. Let it rest on the counter for 5 minutes. This allows the interior steam to redistribute, preventing a gummy texture when you split it open. A quick squeeze with an oven mitt or towel should yield easily — if it still feels firm, return it to the oven for another 10 minutes.

Russet potatoes are the standard choice for baking because their high starch content creates the fluffiest texture. Yukon Golds work too but deliver a denser, creamier interior. Red or new potatoes are waxy and won’t fluff the same way — save those for roasting or boiling.

The Bottom Line

A baked potato at 350°F cooks in roughly 60 to 75 minutes for a medium-large russet, though size and starting temperature shift the window. Internal temperature at 205 to 210°F is the only sure sign of doneness, not the clock. Skip the foil, use an oven thermometer, and check early rather than late.

Your next batch will turn out right when you match the bake time to your specific potato — check the weight on your kitchen scale and set the timer for the low end of the range, then let the probe thermometer confirm it.