How Long to Cook a Baked Potato in the Oven

A baked potato is a whole floury potato roasted until its skin is crisp and its centre is soft enough to fluff with a fork. For four medium-large potatoes, allow 60–75 minutes in a 220°C (425°F) conventional oven, or 200°C fan oven; the exact time depends on their size. This straightforward method suits British baking potatoes such as Maris Piper or King Edward, and it gives you a dependable base for butter, cheese, beans or other toppings.

Ingredients

4 large baking potatoes, about 250–300 g (8.8–10.6 oz) each, or roughly 2¼–2⅔ lb (1–1.2 kg) total
1 tablespoon (15 ml) neutral oil or olive oil
1 teaspoon (5 ml; about 6 g) fine salt, or to taste

Choose potatoes that are roughly the same size so they finish at about the same time. Floury varieties are best for the familiar fluffy middle: Maris Piper and King Edward are widely available in the UK, while a russet potato is a useful alternative elsewhere. Avoid very small potatoes if you want a substantial jacket potato, because they cook sooner and can dry out while you wait for larger ones.

Instructions

Heat the oven. Set a conventional oven to 220°C (425°F), or a fan oven to 200°C (400°F). Put a shelf in the middle. Give the oven time to come fully up to temperature while you prepare the potatoes; baking in an oven that is still warming can make the timing less predictable.
Wash and dry the potatoes. Scrub the skins under cool running water to remove soil, then dry them thoroughly with a clean tea towel. Dry skin is more likely to become crisp than wet skin. Check for blemishes and trim away any damaged areas with a small knife, but leave the skins on.
Pierce and season. Prick each potato several times with a fork, making shallow holes around its sides. This lets steam escape as the inside heats. Rub the skins all over with the oil, then sprinkle with salt. A light, even coating is enough; excess oil can pool on the tray and make the skins greasy.
Arrange on a tray. Set the potatoes directly on a baking tray, with space around each one so hot air can circulate. You can bake them directly on the oven shelf if you prefer, but a tray underneath catches any drips and makes it easier to move them. Do not wrap them in foil: foil traps moisture and tends to give a softer skin rather than a crisp one.
Bake until tender, 60–75 minutes. Roast the potatoes in the preheated oven. Start checking at 60 minutes; carefully squeeze one with an oven glove or press a skewer into its centre. It is ready when the skin feels crisp and the inside gives easily, with no firm or waxy resistance. If it is still hard in the middle, return it to the oven for 10 minutes and check again. Very large potatoes may need longer than 75 minutes, while smaller ones may be done sooner.
Open and fluff. Transfer the hot potatoes to plates. Make a lengthwise slit through the top of each one, taking care not to cut all the way through, then gently push the ends towards the centre to open it. Fluff the inside with a fork and add your chosen topping while it is hot. The recipe’s 75-minute cook time is the upper end of the usual range for potatoes of this size; use the tenderness check, not the clock alone, to decide when to take them out.

Tips

Match the potato size. Similar weights make the bake more even. If you have one much larger potato, put it in the oven 10–15 minutes before the others, or take the smaller ones out as soon as they are tender. Do not assume every potato on the tray will be ready together.
Dry the skin well. After washing, take a moment to remove surface water before oiling. This small detail helps the outside roast rather than steam. For extra crispness, bake directly on the oven shelf with a tray below, but keep enough space around the potatoes for air to move.
Salt to suit your topping. The listed teaspoon is a starting point for four potatoes. If you plan to add salty cheese, bacon or a strongly seasoned filling, use a little less on the skin. If using coarse salt, sprinkle it evenly; its larger crystals will give a slightly different, crunchier finish.
Skip foil for a crisp jacket. Wrapping the potatoes is not necessary and softens the skin. If a recipe or serving setup does call for foil, unwrap leftovers promptly after cooking and refrigerate them within two hours rather than leaving foil-wrapped potatoes at room temperature.

Serving Suggestions

Serve each potato straight from the oven, slit open and fluffed so a topping can reach the warm centre. A knob of butter is a simple choice; add grated Cheddar, mature cheese or a spoonful of sour cream for a richer jacket. For a classic UK lunch, spoon hot baked beans over the potato and finish with black pepper or a little grated cheese. Tuna mixed with mayonnaise and sweetcorn is another familiar filling, while cottage cheese with chopped chives gives a cooler, lighter contrast.

For a meal, pair the potatoes with a leafy salad, coleslaw or cooked vegetables. If serving several toppings, put them in separate bowls so everyone can build their own. Keep hot toppings properly hot and cold toppings chilled until serving, and add them just before eating so the skin stays as crisp as possible.

Variations

Garlic and herb skin: Mix the oil with a small pinch of garlic granules and dried rosemary or thyme before rubbing it over the potatoes. Use a light hand with the herbs, since larger pieces can darken during the long bake. Fresh chopped herbs are better added after cooking.

Lower-salt version: Use less salt or leave it off the skin and season the filling instead. The potato will still bake properly; the skin will simply be less savoury. Unsalted butter, herbs and black pepper make an easy topping when you want to control how much salt you add.

Cheese and onion: Stir finely sliced spring onion into grated Cheddar and spoon the mixture into the hot, fluffed potato. The residual heat softens the onion and begins to melt the cheese. For a milder flavour, use chives instead, or replace some of the Cheddar with a softer cheese.

Quick-cook combination: If you are short on time, microwave the washed and pierced potatoes until they are partly tender, then finish them in the hot oven until the skin crisps. Microwave times vary widely with wattage and potato size, so check frequently and use tenderness rather than a fixed time. This shortcut changes the texture slightly: the centre may be less evenly dry and fluffy than a potato baked entirely in the oven.

Storage and Reheating

For food safety, refrigerate cooked potatoes within two hours of baking. Let them stop steaming briefly, then place them in a covered container or wrap them and chill at 4°C (40°F) or below. They keep for 3–4 days in the fridge. Store potatoes without toppings where possible, since fillings such as sour cream or tuna may have different storage needs and can make the skin soggy.

To reheat one or more potatoes in the oven, heat to 190°C (375°F) and bake until the centre is hot, usually about 15–25 minutes depending on size and whether the potato is whole or cut open. A microwave is quicker: split the potato and heat it in short intervals, turning or rearranging it as needed. Whichever method you use, reheat leftovers to 165°F (74°C), checking the centre with a food thermometer. The skin will be less crisp after microwaving; a brief finish in a hot oven or air fryer can improve it.

Cooked potatoes can be frozen, although thawing may make the texture a little grainier or wetter. Cool and wrap them individually, freeze for up to about one month for best quality, then thaw in the refrigerator before reheating. Do not leave a cooked potato out overnight, and discard it if it has been at room temperature for more than two hours.

Frequently Asked Questions

How long does a baked potato take at 200°C in a UK oven?
At 200°C in a conventional oven, a 250–300 g baking potato generally needs about 75–90 minutes. The recipe above uses 220°C conventional, or 200°C fan, and takes around 60–75 minutes. Ovens vary, so check the centre for tenderness before serving.

Is 200°C fan the same as 220°C conventional?
They are commonly used as approximate equivalents in UK recipes: the fan circulates hot air, so a lower setting is usually used. The actual oven can run hot or cool, and potato size matters too. If your oven tends to brown food quickly, lower the setting slightly and allow extra time for the centre to cook.

How can I tell when a baked potato is done?
The skin should feel dry and crisp, and a skewer should slide into the centre without meeting a hard spot. You can also gently press the potato with an oven glove: a cooked one yields easily. If the centre is firm, bake for another 10 minutes and check again.

Should I boil potatoes before baking them?
No, not for this method. A raw baking potato cooks through in the oven and develops a dry, fluffy centre. Boiling first adds moisture and is unnecessary for a standard jacket potato, though microwave-starting is a practical shortcut when you need to reduce the oven time.

Can I bake potatoes at a lower temperature?
Yes. A lower oven temperature can work, but the potatoes will take longer and the skin may not become as crisp. At about 200°C conventional, plan on roughly 75–90 minutes for medium-large potatoes, then check for tenderness. Avoid relying on a low-temperature timing without checking the centre.

Can I prepare baked potatoes ahead?
You can wash, dry and prick them several hours ahead, then keep them refrigerated until you are ready to bake. Dry them again if moisture has collected on the skins, then oil and salt immediately before they go into the oven. For the best crisp skin, bake close to serving time rather than holding cooked potatoes for a long period.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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