How to Cook Pumpkin Seeds in the Oven

By What Are Pepitas Editorial Team · Updated 2026-09-14 · Part of Pumpkin Seeds Recipe: Roasting In-Shell Seeds the Right Way

If you want one reference for cooking pumpkin seeds in the oven rather than a single recipe, you need a grid. Time to doneness is not fixed; it moves with temperature, batch weight, whether the seed started raw or boiled, how much moisture it still holds, and whether your oven convects. This page lays out those variables against one another so you can look up your situation instead of guessing. Everything assumes clean seed that has already been separated from pulp, and a standard 60 cm oven with two racks.

Read the grid as starting points rather than guarantees, and check early the first time you use any combination. Two rules cover nearly all variation: bigger batches need more time and not more heat, and the seed is genuinely finished a minute or two before it looks finished. For the underlying reasoning behind each temperature band, oven temperature for pumpkin seeds goes deeper into what each range does to the seed, and roasting pepitas in the oven gives the equivalent grid for shelled kernels, which runs dramatically faster. Start from the pumpkin seed recipes index if you have landed here cold.

The Temperature by Time Grid

Every row below assumes a single layer on a rimmed sheet pan roughly the size given, with gaps between seeds and a stir at the halfway point plus one final stir 3 minutes before the end. Times for boiled seed assume a 10 minute simmer followed by a 2 minute drain, which leaves significantly more internal water than an air dried start. Note how sharply the window narrows as temperature climbs: at 250 degrees F you have 10 minutes of slack, while at 400 degrees F you have perhaps 90 seconds.

Batch weight interacts with every number. The same 325 degrees F oven takes 18 to 22 minutes for 100 g of seed but 30 to 38 minutes for 600 g spread across two pans, because the additional mass absorbs heat energy before the seed temperature can rise. If you double a batch, add roughly 40 percent to the time and rotate the pans between racks halfway through rather than pushing the temperature up.

Tray Spacing, Pan Choice and Stirring Intervals

Use a heavy rimmed aluminium or steel sheet pan; dark pans absorb more radiant heat and behave about 15 degrees F hotter than shiny ones, which shortens times by roughly 2 to 4 minutes. Line it only if you must, because parchment slows the moisture loss at the underside contact point. Give each seed 2 to 3 mm of clearance; touching seed shares steam with its neighbours and stays softer where it touches. A half sheet pan comfortably holds 200 g of in-shell seed in a single layer, a full sheet holds 400 g, and going beyond that means using two pans rather than deepening the pile.

Stirring redistributes heat and releases steam. Stir at the halfway point, then at intervals that shrink as temperature rises: every 8 minutes at 275 degrees F, every 5 minutes at 325 degrees F, and every 2 to 3 minutes at 375 degrees F and above. Always scrape the 3 cm band around the pan edge into the centre, because that band runs hottest in nearly every oven and is where scorching starts. If your oven has visible hot spots, rotate the pan 180 degrees at the halfway stir and note which corner browns first for next time.

Adjusting the Grid to Your Own Oven

Convection ovens move air past the seed continuously, which removes moisture faster and browns sooner. Reduce the dial by about 25 degrees F and start checking 20 percent earlier than the table says; a 325 degrees F convection setting approximates 350 degrees F still-air performance. If you cannot change the display, keep the temperature and simply pull the seed earlier. Ovens that run cool are the opposite problem and are best diagnosed cheaply with a 12 dollar oven thermometer placed where the tray sits.

Altitude also matters above roughly 900 metres, where boiling water drops to around 96 degrees C and moisture evaporates more quickly from the pan; expect times to shorten by 5 to 10 percent. Humidity works against you in the drying stage rather than the roasting stage, so a coastal summer batch may need an extra 4 hours of air drying before the listed times apply.

Finally, always use the sensory endpoint rather than the clock alone. Cut one seed open: the kernel should be fully opaque, since translucency means water is still there regardless of how brown the shell looks. Listen for the batch to quieten; the faint hissing during the first third of cooking is surface moisture leaving, and when it stops you are entering the browning phase with considerably less margin for error. Trust those three checks in combination and any row of the grid above will work in any oven, including one you have never used before.

This page is part of the Pumpkin Seeds Recipe: Roasting In-Shell Seeds the Right Way guide.