Roasted Pumpkin Seeds Recipe
Roasting pumpkin seeds turns the slippery tangle scraped out of a carving pumpkin into a crisp, salty snack that keeps for weeks at room temperature. The gap between chewy, pale seeds and ones that snap cleanly is not seasoning, it is water. Seed taken straight from the cavity carries roughly 45 to 55 percent moisture by weight, and browning reactions cannot really get started until most of that has gone. This recipe is therefore built in two distinct stages: drive the water off first, then brown quickly at the end. Every quantity below is given by weight rather than by handful, because two pumpkins of the same diameter can hide very different amounts of usable seed, and weight is the only reliable way to scale the seasoning.
A medium 8 to 10 pound carving pumpkin gives enough clean seed for roughly four snack servings, while a 20 pound giant can produce nearly a kilogram of wet seed mass, most of which is pulp and water rather than anything you will eat. The ratios here scale cleanly from a single sugar pumpkin up to a full sheet pan loaded from three or four squashes at once. If you would rather work with shelled kernels, the same dehydrate-then-brown logic applies but every timing shrinks dramatically; see how to roast raw pepitas for the short-timing version, and pumpkin seed recipes for the wider set of savoury uses for a harvest this size.
Ingredients and Realistic Yield From One Pumpkin
The ingredient list is short: clean dry in-shell seed, a neutral oil with a smoke point above 400 degrees F such as refined sunflower or avocado oil, fine salt, and water for cleaning. Everything else is a variation you can add after the seeds come out of the oven, once you know whether you like the base recipe. Seasonings added before roasting mostly scorch; seasonings added in the last 2 minutes or tossed onto hot seeds bloom in the residual heat without turning bitter. Keep a bowl ready beside the stove so you can toss immediately while the oil is still fluid, because cold seeds will not hold a dry seasoning blend.
Yield is where most recipes mislead people. An 8 to 10 pound carving pumpkin yields about 240 to 330 g of raw seed mass straight from the cavity, pulp and strings included. After float separation you keep roughly 150 to 200 g of clean wet seed. Air drying overnight takes that down by another third, so real dry seed from a medium pumpkin is only 90 to 120 g, which roasts into about 100 to 135 g of finished snack. That is four or five servings at 28 g each, not the three cups of finished snack that a lot of seasonal recipes promise. Expect the same arithmetic to hold for any pumpkin: clean dry seed is roughly 1.2 percent of the whole pumpkin's weight.
| Clean dry seed | Oil | Fine salt | Sheet pan size | Roast time at 325 degrees F |
|---|---|---|---|---|
| 100 g | 5 ml (1 tsp) | 2 g | quarter sheet | 18 to 22 min |
| 200 g | 10 ml (2 tsp) | 4 g | half sheet | 22 to 26 min |
| 300 g | 15 ml (1 tbsp) | 6 g | full sheet | 26 to 32 min |
| 600 g | 30 ml (2 tbsp) | 12 g | two full sheet pans | 30 to 38 min |
Step-by-Step Roasting Method
Step one, separate the seed. Scrape the whole seed mass into a large bowl, add about 2 litres of cold water per 300 g of seed, and stir hard for 30 seconds. Sound heavy seed sinks within about 10 seconds while pulp, membrane and strings float; skim them off with a slotted spoon and repeat with fresh water two or three times until the rinse water stays clear. You will lose 30 to 40 percent of the starting mass here, and that is correct: everything you skim off would have steamed in the oven and softened the shells. Step two, dry. Pat the rinsed seed dry in a towel, then spread it in a single layer on a rack or tray and leave it uncovered at room temperature for 8 to 12 hours. A dehydrator at 135 degrees F does the same job in 3 to 4 hours; a oven held at 200 degrees F with the door propped open finishes it in 45 to 60 minutes.
Step three, season. Move the dry seed to a bowl, add the oil at 5 ml per 100 g of seed, and stir for a full 60 seconds until every shell looks evenly glossy rather than patchy. Add the fine salt now or later; salt before roasting penetrates slightly and gives a more even savoury base, while salting after gives a sharper hit on the tongue and keeps the shells crisper. Step four, roast. Heat the oven to 325 degrees F with a rack in the upper third, spread the seeds in one layer with a little space between them, and set a timer for 10 minutes before you even close the door. Stir at 10 minutes, then every 5 minutes after that, scraping the edges into the centre where heat builds fastest.
Step five, judge the finish and cool properly. The seeds are done when a sample cut in half shows a pale green kernel that has turned opaque instead of translucent, when the shells look barely darker than raw, and when the batch smells nutty rather than grassy. Pull them 1 to 2 minutes before you think they are ready, because a sheet pan holding 300 g of seed carries enough residual heat to take the batch from perfect to bitter in under 90 seconds. Tip everything onto a cold bare tray or a wire rack immediately and spread it out; leaving seeds in a hot pile on the pan steams them soft. They reach full snap about 8 minutes after leaving the oven, when internal temperature drops below 140 degrees F.
Per-Serving Nutrition, Storage and Flavour Variations
Nutritionally both forms are dense food, and the difference between them comes almost entirely from how much shell you eat. In-shell seeds carry about 446 kcal per 100 g with roughly 18.6 g protein, 19.4 g fat, 53.8 g carbohydrate and a striking 18.4 g fibre, most of it in the hull. Shelled kernels are far more concentrated at 559 kcal per 100 g with 30.2 g protein, 49.1 g fat, 10.7 g carbohydrate and 6.0 g fibre, plus minerals such as magnesium at 592 mg, zinc at 7.8 mg and iron at 8.8 mg. A realistic handful of shell-on seeds is 28 g and delivers around 126 kcal with about 5 g of fibre, while 28 g of hulled pepitas delivers closer to 160 kcal and 8.5 g of protein.
For storage, cool completely to room temperature before the jar closes or condensation will collect on the lid and the seeds will go limp within two days. In a sealed glass jar in a dark cupboard they stay crisp for 2 to 3 weeks; in the freezer at 0 degrees F they keep good texture for 6 months and need only 5 minutes at room temperature to thaw. Revive a batch that has gone slightly soft by spreading it on a tray and baking at 300 degrees F for 6 to 8 minutes. For variation, try smoked paprika with 1 g of garlic powder per 100 g of seed, 2 g of brown sugar plus 1 g of cayenne, or 1 g of finely grated lime zest tossed onto the hot seeds. For a shell-free version of the same crunch, roasting hulled pumpkin seeds uses a lower oven and a much shorter window.
| Nutrient | Roasted in-shell per 100 g | Roasted in-shell per 28 g | Hulled kernels per 28 g |
|---|---|---|---|
| Energy | 446 kcal | 126 kcal | 160 kcal |
| Protein | 18.6 g | 5.2 g | 8.5 g |
| Fat | 19.4 g | 5.4 g | 13.9 g |
| Carbohydrate | 53.8 g | 15.1 g | 3.0 g |
| Fibre | 18.4 g | 5.2 g | 1.7 g |
Frequently asked questions
What temperature should I roast pumpkin seeds at?
A steady 325 degrees F gives the best balance of even browning and low risk. Lower bands such as 250 to 275 degrees F dry more thoroughly but take 50 to 70 minutes, while anything above 375 degrees F browns the shell long before the kernel inside has lost its water. Convection settings should be reduced by about 25 degrees F.
Do I have to boil the seeds before roasting?
No. Boiling in salted water for 10 minutes seasons the kernel inside the shell and shortens oven time by roughly 5 minutes, but it also adds moisture you then have to remove with another 20 to 30 minutes in the oven. Air drying raw seeds overnight produces a crisper shell with less total work.
How long do roasted pumpkin seeds last?
Stored fully cooled in an airtight jar away from light, they hold crisp texture for 2 to 3 weeks at room temperature. Sealed against moisture in the freezer they keep acceptable texture for up to 6 months. Any batch that smells painty or tastes sharp has oxidised and should be discarded.
Related guides
How to Roast Pumpkin Seeds: The Master In-Shell Method
Master method for roasting in-shell pumpkin seeds: cleaning pulp, drying, oil quantity, 300 to 325 F timing, salting and
How to Make Roasted Pumpkin Seeds From Start to Finish
From carving pumpkin to sealed jar: cleaning, drying data, oven times, cooling rules and realistic shelf life for homema
How to Roast Raw Pepitas: The Master Method
Roast raw pepitas at 300 to 350 degrees F with exact times by batch size, oil ratios, doneness cues, cooling rules and s
Sources & further reading
- USDA FoodData Central - seeds, pumpkin and squash seeds — https://fdc.nal.usda.gov/
- FoodSafety.gov - cold food storage chart — https://www.foodsafety.gov/food-safety-charts/cold-food-storage-charts
This page is part of the Pumpkin Seeds Recipe: Roasting In-Shell Seeds the Right Way guide.
Questions about a method or a number on this page? Message the editorial desk.
Message us