Chilled Spaghetti Squash Somen Recipe

Pasta, Noodles, Dumplings

March 22, 2026

A Refreshing, Gluten-Free Twist on a Summer Classic!

There’s nothing quite like a bowl of chilled somen noodles on a sweltering summer day. The delicate, thin noodles are the epitome of refreshing. But what if we could capture that same light, slurpable magic with a veggie-forward, gluten-free twist? Enter the Spaghetti Squash Somen!

We’re swapping traditional wheat noodles for vibrant strands of roasted spaghetti squash, creating a dish that’s just as satisfying but packed with extra nutrients. Served ice-cold with a savory, umami-rich dipping sauce and fresh, zesty toppings, this recipe is your new go-to for a light lunch or a sophisticated starter on a warm evening. It’s a fun, healthy, and utterly delicious way to enjoy a seasonal favorite!

Ingredients

• For the Spaghetti Squash “Noodles”
• 1 medium spaghetti squash
• ½ cup / 125 ml Vegetarian Dashi or water
• For the Dipping Sauce & Toppings
• 2 tablespoons mirin
• 2 tablespoons sake
• 4 tablespoons soy sauce
• 1 teaspoon sugar
• 1 cup / 250 ml Vegetarian Dashi
• 2 teaspoons toasted sesame seeds
• 4 green onions (scallions), finely chopped
• 2 teaspoons grated fresh ginger
• For the Ponzu Garlic Variation
• 2 tablespoons olive oil
• 1 teaspoon grated garlic
• 4 oz / 120 g cherry tomatoes, halved
• Furikake Seasoning, for serving
• Vegetarian Ponzu Sauce, for dipping

Instructions

1. Preheat your oven to 400°F / 200°C.
2. Prepare the squash: Carefully cut the spaghetti squash in half lengthwise. Scoop out and discard the seeds. Place the halves cut-side down in a roasting pan, pour in the ½ cup Vegetarian Dashi or water, and cover tightly with aluminum foil.
3. Roast the squash for about 30 minutes, or until the flesh is tender and can be easily pierced with a fork.
4. Make the dipping sauce: While the squash roasts, combine the mirin and sake in a small saucepan over medium-high heat. Simmer for 2 minutes to cook off the alcohol.
5. Stir in the soy sauce, sugar, and 1 cup of Vegetarian Dashi. Cook for another 2 minutes, stirring to dissolve the sugar. Remove from heat, let it cool to room temperature, then chill in the refrigerator for at least 10 minutes.
6. Create the “noodles”: Once the squash is cooked and cool enough to handle, use a fork to scrape the flesh from the skin, creating long, noodle-like strands.
7. Chill the “noodles”: Transfer the spaghetti squash strands to a bowl and refrigerate for at least 30 minutes until well-chilled.
8. Serve: Divide the chilled squash “noodles” among four bowls. Sprinkle with toasted sesame seeds. Serve with the chilled dipping sauce on the side, along with small bowls of chopped green onions and grated ginger for guests to add as they please.
9. Ponzu Garlic Variation
10. Follow steps 1-3 and 6-7 to prepare and chill the spaghetti squash “noodles”.
11. In a large bowl, gently toss the chilled “noodles” with olive oil, grated garlic, and halved cherry tomatoes.
12. Serve with Furikake Seasoning and Vegetarian Ponzu Sauce on the side for dipping and sprinkling.

Nutritional Information

• Nutritional Highlights
• Calories: Approximately 150 kcal per serving
• A fantastic low-carb and gluten-free alternative to traditional pasta.
• Rich in Vitamin A, Vitamin C, and antioxidants from the spaghetti squash.
• A light and hydrating meal, perfect for mindful eating.

Pro Tips

• For easier and safer cutting, pierce the spaghetti squash a few times with a knife and microwave for 3-5 minutes to soften the skin before slicing it in half.
• Do not overcook the squash! You want the strands to have a slight al dente bite, not turn to mush. Start checking for doneness after 25 minutes.
• The dipping sauce tastes even better when made a day in advance, allowing the flavors to meld and deepen in the refrigerator.
• For the ultimate refreshing experience, chill not only the “noodles” and sauce but also your serving bowls.

FAQ

Q: Is this spaghetti squash somen recipe vegan
A: Yes, this recipe is easily made vegan. Ensure you use a kombu-based (seaweed) vegetarian dashi, as some vegetarian broths can contain non-vegan ingredients. All other ingredients listed, including mirin, sake, and soy sauce, are typically vegan.

Q: How can I add more protein to this dish
A: To make this a more complete vegetarian meal, consider adding protein-rich toppings. Chilled silken tofu, edamame, or a sprinkle of hemp seeds would complement the flavors wonderfully without making the dish heavy.

Q: What can I substitute for the vegetarian dashi
A: If you don’t have vegetarian dashi, you can use a light vegetable broth. For a richer umami flavor, try steeping a piece of kombu (dried kelp) in hot water for 10-15 minutes to create a simple, flavorful broth to use in the dipping sauce.

Q: How should I store leftovers for the best texture
A: For the best results, store the chilled spaghetti squash “noodles” and the dipping sauce in separate airtight containers in the refrigerator for up to 2 days. Storing them separately prevents the squash from becoming soggy and helps maintain its “al dente” texture.

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