How to Roast Pumpkin Seeds in the Oven: Times, Temps and Tips

To roast pumpkin seeds in the oven, rinse off the pulp, pat the seeds dry, toss them with a little oil and salt, and spread them in a single layer on a baking sheet. Bake at 300-350°F (about 150-175°C), stirring every so often, until they’re golden and crisp. At 350°F that takes roughly 15-25 minutes; at 300°F, more like 30-45.

That’s the short version. Below are the full steps, the one optional step that makes the biggest difference, and why recipes give such different times.

What you need

• Seeds from your pumpkin, rinsed (the measurements below are for about 2 cups)
• 1 tablespoon olive or canola oil per 2 cups of seeds (the amount University of Illinois Extension uses)
• Salt, plus any seasonings you like
• A rimmed baking sheet, a colander and paper or kitchen towels
• Optional: a pot of salted water for pre-boiling

Step-by-step: roasting pumpkin seeds in the oven

1. Preheat the oven. 325-350°F is a good middle ground. Lower temperatures take longer but give you more room for error.
2. Separate the seeds from the pulp. University of Missouri Extension suggests putting the seeds and pulp in a big bowl of water and rubbing them with your hands. The seeds float free and most of the stringy bits sink. Any small strands left on the seeds come off easily after roasting, so don’t overdo it.
3. Pick out damaged seeds. Illinois Extension recommends removing any seeds you cut while carving.
4. (Optional) Boil in salt water. Illinois Extension brings 1 quart of water and 2 tablespoons of salt to a boil and cooks 2 cups of seeds in it for 10 minutes. Inspired Taste simmers for a shorter 5 minutes. More on why below.
5. Dry them well. Drain, spread the seeds on towels and pat them dry. Inspired Taste warns that wet seeds won’t brown or crisp, and this step matters more than any other.
6. Oil and season. Toss the seeds in a bowl with the oil. If you skipped the boil, Illinois Extension suggests about 1/2 teaspoon of salt and/or other spices for 2 cups of seeds.
7. Spread in a single layer. Use a large sheet so the seeds don’t pile up. Crowded seeds steam instead of crisping.
8. Roast and stir. Stir or shake the pan every 5-10 minutes so they brown evenly, and rotate the pan if your oven has hot spots.
9. Watch the last few minutes. Seeds go from toasted to burnt quickly near the end. They’re done when they’re light golden and sound crisp when you stir them.
10. Cool on the pan. They keep crisping as they cool. Taste one after a few minutes and add more salt if you need to.

Oven temperature and time: what the sources say

There’s no one official time. Recipes use temperatures from 300°F to 400°F, and seed size, how dry the seeds are and how full the pan is all change the timing. Chowhound gives 20-30 minutes at 325°F and 10-25 minutes at 350°F, depending on seed size. Here’s how a few published recipes compare:

Even sources from the same publisher can disagree. An Illinois Extension blog post gives a longer, lower-and-slower schedule than its main recipe page. Treat every time here as a starting point and judge by color and crunch.

Which temperature should you pick?

• 300°F: The most forgiving choice. It takes longer, but the inside dries out before the shell gets too dark. Good if you’re also busy carving.
• 325-350°F: The most common range. Faster, but you need to check more often near the end.
• 375°F and up: Fast. Some recipes use it, but it leaves very little room for error, so stay close to the oven.

Should you boil the seeds first?

It’s optional, and opinions differ. Illinois Extension says boiling in salt water helps the seeds roast more evenly. Go Dairy Free adds that if you only toast the seeds, the kernels end up less cooked and harder to eat.

The trade-off is time: you add a boil, a drain and a thorough drying step. Missouri and Oklahoma State Extension skip it and just salt the oiled seeds. If you want the simplest version, skip the boil. If you want the most evenly seasoned, crunchiest result, boil them.

Seasoning ideas

Missouri Extension suggests a few combinations to add with the oil:

• Savory: garlic powder with a splash of Worcestershire sauce
• Warm fall spice: cinnamon, ginger and allspice
• Spicy: thyme with cayenne

Inspired Taste uses 2 teaspoons of a spice blend with 2 teaspoons of oil (olive, melted coconut or a nut oil such as walnut). If you’re using sugar, maple syrup or honey, a lower oven helps, because sugar burns faster than the seeds brown. The Takeout’s sweet-and-spicy version roasts at 300°F with butter and maple syrup for that reason.

You can also skip seasoning entirely. Missouri Extension notes that salt and flavorings are optional.

Common problems and fixes

Storing roasted pumpkin seeds

Let the seeds cool completely, then put them in an airtight container. According to The Takeout, homemade roasted seeds keep about two weeks at room temperature and up to two months in the fridge. Freezing keeps them longer, but they usually lose some of their crunch. Shelf-life estimates vary between sources, so check them before eating: throw out any that smell rancid, taste sour or look moldy.

A note on nutrition

Missouri Extension gives about 148 calories, 9 grams of protein and 1 gram of fiber per ounce of seeds (roughly 140 seeds). Added oil, salt and sugar change those numbers, so treat them as a rough guide.

Times and methods above reflect the published recipes cited, as of October 2026. Ovens vary, so let color and crunch be your final guide.