Sliced potatoes bake evenly in the oven when you choose the correct temperature for crispy edges and soft centers. So what temperature to cook sliced potatoes in the oven? The short answer is 400°F (205°C) for most recipes.
That temp gives you browning on the outside without drying out the middle. But the full answer depends on how thick you cut them and what texture you want.
Below you’ll find exact temps, times, and simple steps that work every time.
The Best Temperature For Most Sliced Potatoes
Set your oven to 400°F (205°C). This is the sweet spot for sliced potatoes.
At this heat, the outside crisps up while the inside turns soft and fluffy. It works for russet, Yukon gold, and red potatoes.
If you use a convection oven, drop the temp to 375°F (190°C). The fan moves hot air around, so food cooks faster and browner.
- 400°F (205°C): standard oven, best all-around choice
- 375°F (190°C): convection oven
- 425°F (220°C): thin slices, extra crispy
- 350°F (175°C): thick slices or when baking with sauce and cheese
What Temperature To Cook Sliced Potatoes In The Oven
This is the question most people search for, so let’s break it down by dish. Different potato recipes need different heat.
For Crispy Roasted Slices
Use 425°F (220°C). High heat pulls moisture out fast, which helps the edges brown.
Cut slices about 1/4 inch thick. Thinner slices burn at this temp, so keep an eye on them after 20 minutes.
For Soft Sliced Potatoes
Use 350°F (175°C). Lower heat cooks them slow and even. The centers get creamy instead of crisp.
This temp works great for scalloped potatoes, potato gratins, and layered dishes with cream or broth.
For Sheet Pan Sliced Potatoes
Use 400°F (205°C). It’s the middle ground. You get some browning plus a tender middle.
Spread the slices in a single layer. If they overlap, they steam instead of roast.
For Air Fryer Style Results In A Regular Oven
Use 425°F (220°C) and place the rack in the upper third of the oven. Move the pan once halfway through.
How Long To Bake Sliced Potatoes
Time matters as much as temperature. Here are rough guides based on 400°F (205°C).
- 1/8 inch slices: 15 to 20 minutes
- 1/4 inch slices: 25 to 30 minutes
- 1/2 inch slices: 35 to 45 minutes
- Thick rounds with sauce: 50 to 60 minutes
Flip the slices halfway through baking. This helps both sides brown and keeps them from sticking.
Simple Steps For Perfect Oven Sliced Potatoes
- Preheat the oven to 400°F (205°C). Don’t skip this step.
- Wash and scrub the potatoes. Peel them if you like, but the skin adds texture.
- Slice them evenly, about 1/4 inch thick. Uneven slices cook at different speeds.
- Soak the slices in cold water for 10 minutes. This removes extra starch.
- Dry them well with a clean towel. Wet potatoes steam and turn soggy.
- Toss with oil, salt, pepper, and any herbs you enjoy.
- Spread them on a baking sheet in one layer. Give each slice some space.
- Bake for 25 to 30 minutes, flipping once at the halfway point.
- Check for doneness. A fork should slide in with little resistance.
Tips That Make A Real Difference
Pick The Right Potato
Russets get crispy outside and fluffy inside. Yukon golds stay creamy. Red potatoes hold their shape well.
Waxy potatoes like reds work best for gratins. Starchy ones like russets are best for roasting.
Don’t Crowd The Pan
If the slices touch each other, they release steam. Steam makes them soft and pale. Use two pans if you need to.
Use Enough Oil
Every slice needs a light coat of oil. Too little oil means dry, stuck potatoes. Too much makes them greasy.
About two tablespoons of oil per pound of potatoes is a good starting point.
Salt At The Right Time
Salt before baking for flavor. Add more salt right after they come out of the oven while they’re still hot.
Try Parchment Paper
Parchment paper stops sticking and makes cleanup fast. It also helps the bottoms brown without burning.
Common Mistakes To Avoid
- Baking at 300°F (150°C) or lower, which leaves slices pale and soft
- Cutting slices too thick, which makes the outside burn before the inside cooks
- Skipping the drying step, which causes soggy results
- Opening the oven door too often, which drops the heat
- Using a cold pan, which slows browning on the bottom
Adjusting For Your Oven
Every oven runs a bit different. Some run hot, some run cool.
Buy an oven thermometer. It costs a few dollars and tells you the true temp inside.
If your oven runs 25 degrees hot, set it to 375°F (190°C) instead of 400°F (205°C). Small changes keep your potatoes from burning.
High Altitude Note
At high altitudes, water boils at a lower temp. Potatoes take longer to soften. Add 5 to 10 minutes to the bake time and keep the temp the same.
Quick Recap
For most sliced potato recipes, bake at 400°F (205°C) for 25 to 30 minutes. Use 425°F (220°C) for thin, crispy slices. Use 350°F (175°C) for soft, creamy dishes like gratins.
Slice evenly, dry the slices, use enough oil, and don’t crowd the pan. Do those four things and your potatoes turn out right every time.
Now you know exactly what temperature to cook sliced potatoes in the oven. Pick your temp, set the timer, and enjoy golden edges with tender centers.