When the lid comes off, the potato skins look damp, not crisp, and the knife test tells you more than the outside ever will. A russet can look ready while its center is still firm, especially if one potato is larger than the others. For these Instant Pot baked potatoes, I use four medium russets and check each one before calling them done.
The trivet matters because the potatoes sit above the water and cook in the steam, rather than resting in it. That gives you tender potatoes without a pot of boiling water to watch. I also keep the pressure release in two parts: a natural release first, then a careful turn of the valve. The result is a soft, fluffy center that’s ready to split open while still warm.
Kitchen Note
Don’t turn the valve to Venting the moment the pressure-cooking time ends. Let the pot release pressure naturally for 10 minutes first, then turn the valve carefully; rushing that handoff makes the release less controlled.
Save these Instant Pot baked potatoes for a fluffy russet center without heating up the oven.
Why Four Similar-Sized Russets Cook More Evenly
The biggest variable here isn’t a special pressure setting; it’s how much potato you put on the trivet. A medium russet is about 8 ounces, and potatoes close to that size tend to reach the center at a similar pace. If you mix a small potato with a much larger one, the small one may be tender while the large one still resists the knife. The pressure cooker doesn’t make different-sized potatoes identical.
Pick four russets that look roughly alike before you start. They don’t need to be exact twins, but a similar thickness helps more than matching their length. Keep the potatoes arranged on the trivet rather than wedging them down into the water. That arrangement lets steam circulate around them, and it leaves you with a straightforward check at the end: test each center instead of judging the whole batch by the potato on top.
This is also why I don’t promise a shorter time for a smaller-looking potato or a precise adjustment for a larger one. The useful measure is the knife in the center. It gives you a clear answer without guessing from skin color or cooking time alone.
Why Russets, Water, and a Trivet Belong Together
- Russet potatoes — Their starchy flesh turns soft and fluffy under pressure, which is the texture most people want from a baked potato. Choose firm potatoes without soft spots; the recipe is timed for medium russets, not waxier varieties that cook and eat differently. Scrub the skins well so any soil is removed before cooking. There isn’t a direct potato swap that keeps the same timing and result.
- Water — The water creates the steam that brings the Instant Pot to pressure; it isn’t there to boil the potatoes. Keep the stated amount rather than reducing it, since the cooker needs liquid to build pressure.
- The trivet — It keeps the potatoes raised above the water while steam moves around them. Set it into the pot before arranging the potatoes, and don’t substitute a bed of water for this setup.
The Pressure-Cooking Sequence That Gets the Centers Tender
Set Up the Pot for Steaming
Pour the water into a 6-quart Instant Pot and set the trivet inside. Check that the trivet sits level before adding the potatoes so they stay above the water. This recipe relies on steam, not direct contact with the liquid. Keep the pot’s water and trivet setup as stated.
Prick and Arrange the Russets
Prick each scrubbed potato several times with a fork, then arrange the potatoes on the trivet. A few punctures in each potato are the specified preparation; don’t skip one because a skin looks thin. Lock the lid and set the steam valve to Sealing. Check that the lid is secure before starting the pressure cook.
Cook at High Pressure, Then Let Pressure Fall
Cook on High Pressure for 15 minutes. When the cooking cycle ends, leave the pot alone for 10 minutes so the pressure can release naturally. After that, carefully turn the valve to Venting to release any pressure that remains. The pressure-building period happens before the timed cook, so the full time at the counter will be longer than the 15-minute setting.
Use the Knife Test on Every Potato
Once the pressure is released, check that a knife slides easily into the center of each potato. Test them one by one; a tender potato doesn’t confirm that its neighbor is ready. If any are still firm, return those potatoes to the pot and cook on High Pressure for 2 more minutes, then quick-release the pressure. The center—not the skin—is the cue to trust.
Two Useful Ways to Change the Batch Without Changing Its Ingredients
Cook a two-potato batch
For two medium russets, keep the full cup of water and use the same 6-quart pot and trivet setup. Use the same 15 minutes on High Pressure and 10-minute natural release, then check both centers with a knife. A smaller batch is handy when you don’t need four servings, while keeping the pressure-cooker setup consistent.
Serve the fluffy centers without the skins
After cooking, split the potatoes lengthwise and scoop the soft centers into bowls if you prefer a skinless presentation. This keeps the ingredient list plain and changes the format, not the pressure-cooking method. The skins won’t have the crisp finish of an oven-baked potato, so this is a good way to serve the tender interiors on their own.
Storage and Reheating
- Refrigerator: Store cooked potatoes in a covered container and refrigerate within 2 hours. Use within 3 to 4 days; the skins soften in storage.
- Freezer: Whole cooked russets can be frozen, but they often thaw with a grainier, wetter texture. I don’t recommend freezing them if you want the same fluffy baked-potato texture.
- Reheating: Microwave until hot through, turning the potato once if needed. Stop when it’s heated; long extra bursts can dry out the center.
Questions That Come Up With Instant Pot Baked Potatoes
Instant Pot Baked Potatoes
Ingredients
Equipment
Method
- Pour the water into a 6-quart Instant Pot and set the trivet inside.
- Prick each potato several times with a fork, then arrange them on the trivet; lock the lid and set the steam valve to Sealing.
- Cook on High Pressure for 15 minutes, then let the pressure release naturally for 10 minutes before carefully turning the valve to Venting.
- Check that a knife slides easily into the center of each potato; if needed, return any firm potatoes to the pot and cook on High Pressure for 2 more minutes, then quick-release the pressure.