Crispy Roasted Seaweed Chips

Featured in: Vegetable Sides & Grain Pairings

Transform dried nori sheets into addictively crispy seaweed chips with minimal effort. These light, savory snacks require just three ingredients: sushi-grade nori, toasted sesame oil, and sea salt. Layer the sheets, brush with oil, season, cut into bite-sized pieces, and roast at 300°F for 6-8 minutes until crispy. They're naturally vegan, gluten-free, and low-carb, making them perfect for any dietary preference.

Updated on Sat, 17 Jan 2026 11:29:00 GMT
Golden-brown roasted seaweed chips arranged in a crisp, single layer on a white plate, showcasing their light, savory crunch and vibrant green hue. Pin this
Golden-brown roasted seaweed chips arranged in a crisp, single layer on a white plate, showcasing their light, savory crunch and vibrant green hue. | platesignal.com

I stumbled on this recipe during a late-night snack craving when all I had was leftover nori from a sushi night. The idea of roasting seaweed seemed odd at first, but the moment those sheets hit the oven and filled my kitchen with that toasty, oceanic aroma, I was hooked. They crisped up beautifully, shattering into delicate shards with every bite. I made three batches that week alone, tweaking the salt and oil until I got it just right. Now they're my go-to when I want something salty and light without the guilt.

I brought a batch to a potluck once, skeptical that anyone would try them. Within minutes, they were gone, and I had three people asking for the recipe. One friend said they tasted like the ocean in the best way, and another admitted she'd never considered seaweed as a snack before. Watching people reach for seconds made me realize how something so simple could feel surprisingly special. It became my secret weapon for gatherings after that.

Ingredients

  • Dried nori sheets: Use sushi-grade nori for the best texture and flavor, the kind that's dark green and crisp straight from the package.
  • Toasted sesame oil: This adds a nutty, rich depth that makes the chips addictive, but any neutral oil works if you prefer a milder taste.
  • Fine sea salt: A light sprinkle is all you need to bring out the natural brininess without overpowering the delicate seaweed.

Instructions

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Prep your oven and pan:
Set your oven to 300°F and line a baking sheet with parchment paper. This low temperature ensures the nori crisps without burning too quickly.
Layer and season:
Place one nori sheet shiny side down, brush lightly with sesame oil, and sprinkle with salt. Top with another sheet, oil, and salt again, creating three double-layered pairs.
Cut into pieces:
Use kitchen scissors or a sharp knife to cut each pair into 2-inch strips or squares. The smaller pieces roast more evenly and are easier to snack on.
Arrange and roast:
Spread the pieces in a single layer on the baking sheet without overlapping. Roast for 6 to 8 minutes, watching closely, until they turn crisp and darker green.
Cool and store:
Let the chips cool completely on the pan so they firm up. Store any leftovers in an airtight container to keep them crunchy for up to three days.
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There was an afternoon when I made these for my niece, who claimed she hated anything green. She watched me suspiciously as I pulled the tray from the oven, then tentatively tried a piece. Her eyes lit up, and she ate nearly the entire batch while telling me they tasted like the sea but in a cool way. That moment reminded me how food can surprise us when we give it a chance.

Flavor Variations to Try

Once you master the basic version, the fun really begins with seasoning experiments. I've sprinkled chili flakes for heat, garlic powder for a savory kick, and even a dusting of furikake for extra umami complexity. One time I tried a tiny drizzle of honey mixed with the oil, and the sweet-salty combination was unexpectedly delicious. Don't be afraid to play around, the nori is a blank canvas that takes on whatever flavors you throw at it.

Serving Suggestions

These chips shine on their own, but they also make a fantastic garnish crumbled over rice bowls, miso soup, or fresh salads. I've tucked them into lunchboxes alongside fruit and nuts for a balanced snack. They're also incredible served alongside sushi or poke bowls, adding an extra layer of texture. The lightness means you can keep munching without feeling too full, which is both a blessing and a curse when you're trying to pace yourself.

Storage and Freshness Tips

Humidity is the enemy of crispy seaweed, so airtight storage is essential. I like to toss in a small silica gel packet if I have one handy, it keeps moisture at bay for days. If your chips do lose their crunch, a quick 2-minute stint back in a 300°F oven will revive them beautifully.

  • Store in a sealed container or zip-top bag away from heat and light.
  • Avoid refrigerating them, as the moisture will make them soggy.
  • Make small batches often rather than a huge batch that sits around, freshness makes all the difference.
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Close-up view of freshly roasted seaweed chips, seasoned with salt and sesame oil, ready to be enjoyed as a vegan, gluten-free snack. Pin this
Close-up view of freshly roasted seaweed chips, seasoned with salt and sesame oil, ready to be enjoyed as a vegan, gluten-free snack. | platesignal.com

These chips have become my favorite thing to make when I want something quick, flavorful, and a little bit different. They prove that the best snacks don't need a long ingredient list, just good timing and a little care.

Recipe Questions

How do I prevent seaweed chips from becoming soggy?

Store your cooled chips in an airtight container away from moisture. Avoid storing in humid environments. If they lose crispness, briefly reheat them in a 275°F oven for 2-3 minutes.

Can I use flavored nori instead of plain?

Yes, flavored nori works well. Just be mindful of additional seasonings already present. Start with less oil and salt, then adjust to taste. Always check labels for gluten content.

What's the best oil substitute for sesame oil?

Olive oil, avocado oil, or neutral oils like sunflower work beautifully. Sesame oil adds distinctive nutty flavor, but other oils still create wonderfully crispy chips with a lighter taste profile.

How can I add more flavor to these chips?

Sprinkle chili flakes, garlic powder, furikake, or wasabi powder before roasting. For a spicy kick, mix sriracha with oil. Experiment with different seasonings to find your favorite combination.

How long do homemade seaweed chips stay fresh?

Stored in an airtight container at room temperature, they maintain optimal crispness for 3-5 days. For longer storage, refrigerate for up to two weeks, though crispness gradually diminishes.

Why are my chips burning in the oven?

Seaweed burns quickly, so monitor closely after 5 minutes. Keep oven temperature at 300°F precisely. If using a convection oven, reduce temperature by 25°F and check at 4-5 minutes.

Crispy Roasted Seaweed Chips

Crispy, savory seaweed chips seasoned with sesame oil and salt. Light, flavorful, and ready in under 15 minutes.

Prep time
5 min
Cook time
8 min
Total duration
13 min
Created by Carson Hughes


Skill level Easy

Cuisine Asian-Inspired

Yields 2 Portions

Dietary notes Vegan-friendly, Dairy free, Gluten free, Low in carbs

What You Need

Main

01 6 sheets of dried nori (seaweed), sushi-grade

Seasoning

01 2 teaspoons toasted sesame oil (or neutral oil)
02 1/4 teaspoon fine sea salt

How to Make It

Step 01

Preheat oven: Preheat oven to 300°F (150°C). Line a baking sheet with parchment paper.

Step 02

Position first layer: Place one nori sheet on the parchment, shiny side down.

Step 03

Apply seasoning: Lightly brush the top of the sheet with sesame oil, then sprinkle with a pinch of sea salt.

Step 04

Layer remaining sheets: Place another nori sheet on top to make a double layer, brush with oil, and sprinkle again with salt. Repeat until all sheets are used, forming 3 sandwiched pairs.

Step 05

Cut into portions: Using kitchen scissors or a sharp knife, cut each pair into 2-inch wide strips or squares.

Step 06

Arrange for baking: Arrange the pieces in a single layer on the baking sheet, taking care not to overlap.

Step 07

Roast chips: Roast for 6–8 minutes, watching closely to prevent burning. Chips should be crisp and dark green.

Step 08

Cool and store: Let cool completely before serving. Store leftovers in an airtight container to maintain crispiness.

What You'll Need

  • Baking sheet
  • Parchment paper
  • Pastry brush
  • Kitchen scissors or sharp knife

Allergy details

Please review each ingredient for possible allergens. Check with a health specialist if uncertain.
  • Contains seaweed (marine algae).
  • Sesame oil may be an allergen—substitute with another oil if needed.
  • Double-check labels for gluten if using flavored seaweed.

Nutrition info (per serving)

These nutrition stats are for general info and not a substitute for professional advice.
  • Calories: 35
  • Total fat: 2.5 g
  • Carbohydrates: 2 g
  • Proteins: 1 g