Roasted Seaweed Chips

Featured in: Vegetarian Picks

These seaweed chips offer a light and crispy texture enhanced by toasted sesame oil and a pinch of sea salt. Made by layering sheets of sushi-grade nori, brushing them with oil, then roasting until perfectly crisp, this snack delivers a satisfying crunch. Ideal for a quick, flavorful treat, the chips can be seasoned further with spices like chili flakes or furikake. They’re easy to prepare and suit vegan, gluten-free, and low-carb diets.

Updated on Tue, 30 Dec 2025 08:55:00 GMT
Golden, crispy Roasted Seaweed Chips glistening with oil and salt, a light and savory snack. Save
Golden, crispy Roasted Seaweed Chips glistening with oil and salt, a light and savory snack. | ovenharmony.com

I used to buy those little packets of roasted seaweed at the grocery store until one afternoon I realized I was spending more on snacks than on actual meals. A friend who grew up eating nori told me how easy it was to make at home, and I didn't believe her until I tried it myself. Now I keep a stack of nori sheets in the cupboard and make these whenever the craving hits. The smell of toasted sesame oil filling the kitchen is enough to make anyone curious.

I started making these during late nights when I needed something to munch on that wouldn't weigh me down. My sister came over once and ate an entire tray without realizing it, then asked if I had more hidden somewhere. Now she texts me every few weeks asking if I have any ready. It became our thing, this little crispy snack that somehow always disappears faster than I expect.

Ingredients

  • Dried nori sheets: Look for sushi-grade nori that feels smooth and dark green, the fresher it is the better it crisps up in the oven.
  • Toasted sesame oil: This is what gives the chips that deep nutty flavor, but if you want something lighter you can use any neutral oil and the result is still delicious.
  • Fine sea salt: A light sprinkle goes a long way, and fine salt distributes more evenly than coarse.

Instructions

Prep the oven and tray:
Preheat your oven to 300°F and line a baking sheet with parchment paper. This low temperature keeps the seaweed from burning while it crisps.
Layer and brush:
Lay one nori sheet shiny side down, brush the top lightly with sesame oil, and sprinkle with a pinch of salt. Stack another sheet on top, brush again, and repeat until you have three sandwiched pairs.
Cut into pieces:
Use kitchen scissors or a sharp knife to cut each pair into strips or squares about two inches wide. They shrink just a little as they roast.
Roast until crisp:
Arrange the pieces in a single layer without overlapping and roast for six to eight minutes, keeping a close eye on them. They should turn darker green and feel crisp to the touch.
Cool and store:
Let the chips cool completely on the tray before eating or storing. They stay crispy for days in an airtight container if you can resist eating them all at once.
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There was an evening when I served these alongside rice and miso soup, and my neighbor asked if I had ordered takeout. I laughed and told her it was just seaweed from a sheet, oil, and salt. She left with the recipe written on a napkin. That moment reminded me how something so simple can feel special when you make it yourself.

Flavor Variations

Once you get the basic version down, you can play with the seasoning before roasting. I have sprinkled chili flakes for heat, garlic powder for a savory kick, and even a little furikake seasoning for something more complex. Each version tastes like a different snack entirely, and it only takes a few extra seconds.

Serving Ideas

These chips are perfect straight out of the container, but I have also crumbled them over bowls of rice, tossed them into salads for crunch, and even used them as a topping for ramen. They add a salty, umami boost to anything they touch, and the texture contrast is always welcome.

Storage and Freshness

The key to keeping these crispy is making sure they cool completely before you seal them up. Any lingering warmth creates moisture, and moisture is the enemy of crunch. I learned this after storing a batch too early and ending up with chewy seaweed the next day.

  • Store in an airtight container at room temperature for up to five days.
  • If they soften, reheat in a 250°F oven for one to two minutes.
  • Avoid the fridge, it makes them soggy faster than you would think.
Close-up of toasted Roasted Seaweed Chips, perfectly crispy and ready for a flavorful bite. Save
Close-up of toasted Roasted Seaweed Chips, perfectly crispy and ready for a flavorful bite. | ovenharmony.com

I hope these become your go-to snack the way they did for me. There is something quietly satisfying about pulling a crispy sheet of seaweed from the oven and knowing you made it happen in less than fifteen minutes.

Recipe FAQ

What type of seaweed is best for making these chips?

Sushi-grade dried nori sheets work best as they are thin, clean, and crisp up nicely when roasted.

Can I use oils other than sesame oil?

Yes, neutral oils like olive or avocado oil are great alternatives that maintain flavor and crispness.

How do I ensure the chips stay crispy after roasting?

Allow the chips to cool completely before storing them in an airtight container to preserve their crunch.

What are some optional seasonings to enhance flavor?

Try adding chili flakes, garlic powder, or furikake seasoning before roasting for extra zest and complexity.

Can these be used as a topping or snack?

Absolutely, these chips work perfectly as a standalone snack or crumbled over salads, rice, and soups for added texture.

Roasted Seaweed Chips

Savory seaweed snack roasted with sesame oil and sea salt, delivering light and crispy bites.

Prep duration
5 min
Cook duration
8 min
Complete duration
13 min
Created by Claire Johnson

Classification Vegetarian Picks

Complexity Easy

Heritage Asian-Inspired

Output 2 Portions

Dietary considerations Plant-based, No dairy, Without gluten, Low-Carbohydrate

Components

Main

01 6 sheets dried nori seaweed, sushi-grade

Seasoning

01 2 teaspoons toasted sesame oil
02 1/4 teaspoon fine sea salt

Directions

Phase 01

Preheat oven and prepare baking sheet: Preheat the oven to 300°F. Line a baking sheet with parchment paper.

Phase 02

Layer nori sheets: Place one nori sheet on the parchment with the shiny side down.

Phase 03

Brush with oil and season: Lightly brush the nori sheet with toasted sesame oil and sprinkle with a pinch of sea salt.

Phase 04

Form double-layered nori pairs: Place another nori sheet on top, brush with oil, and sprinkle with salt. Repeat for all sheets, creating three double-layer pairs.

Phase 05

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

Phase 06

Arrange pieces for roasting: Spread the nori pieces in a single layer on the baking sheet, ensuring they do not overlap.

Phase 07

Roast until crisp: Roast in the oven for 6 to 8 minutes, monitoring closely to avoid burning. Chips should be crisp and dark green.

Phase 08

Cool and store: Allow the chips to cool completely before serving. Store leftovers in an airtight container to preserve crispness.

Necessary tools

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

Allergy details

Review each component for potential allergens and consult healthcare professionals if you're unsure about ingredients.
  • Contains seaweed and sesame oil which may cause allergies.

Nutritional information (each portion)

These values are approximate guidelines only and shouldn't replace professional medical guidance.
  • Energy: 35
  • Fats: 2.5 g
  • Carbohydrates: 2 g
  • Proteins: 1 g