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Home » Recipes » Japanese Side Dishes

Kabocha no Nimono (Japanese Simmered Kabocha Squash)

Yoko from Yoko's kitchen
Modified: Oct 27, 2026 · Published: Oct 27, 2026 by Yoko · This post may contain affiliate links · Leave a Comment

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Kabocha no Nimono is a classic Japanese home dish. Kabocha squash is gently simmered in sweet-and-savory seasonings until tender and fluffy, while the edible green skin adds beautiful color and textural contrast. This simple side dish is made with a handful of ingredients and is a great way to enjoy the natural sweetness of kabocha squash.

Kabocha no nimono, Japanese simmered kabocha squash with decorative leaf cuts on the green skin, served in a pink bowl alongside Japanese side dishes.

If you like kabocha squash or have a whole squash and are wondering what to make, check out Kabocha Squash Miso Soup and Brie and Cranberry Puff Pastry Bites.

Jump to:
  • What Is Kabocha no Nimono?
  • Why You'll Love This Recipe
  • Ingredients
  • How to Prepare Kabocha Squash for Nimono
  • How to Make Kabocha no Nimono (Step-by-Step)
  • Yoko's Tips for the Best Simmered Kabocha
  • How to Prevent Kabocha from Falling Apart
  • Variations
  • How to Serve Kabocha no Nimono
  • Storage and Reheating
  • More Japanese Home-Style Recipes
  • Kabocha no Nimono (Japanese Simmered Kabocha)
  • Yoko's Tips for the Best Simmered Kabocha

What Is Kabocha no Nimono?

Kabocha no nimono is a classic Japanese home dish made by simmering kabocha squash in sweet and savory seasonings. The orange flesh of kabocha squash becomes soft and fluffy, and the green skin is tender and creates beautiful color contrast.

Kabocha squash is simply called kabocha (かぼちゃ) in Japan and is Japanese pumpkin. Nimono (煮物) refers to a simmered dish. It's commonly enjoyed in Japanese homes as a side dish. It's often enjoyed with rice, miso soup, and other dishes as part of a Japanese meal.

This is a simple, humble dish that lets you enjoy kabocha squash's natural sweetness!

Close-up of Japanese simmered kabocha squash with decorative leaf patterns carved into the green skin, served in a pink bowl.

Why You'll Love This Recipe

  • Simple ingredients. Kabocha squash, a few Japanese pantry staples, and water are all you need to make this classic Japanese side dish.
  • Naturally sweet and comforting. Kabocha squash has comforting, natural sweetness. The savory soy sauce seasoning complements its sweetness.
  • Tender and fluffy texture. Gently simmered kabocha becomes soft and fluffy while the green skin helps the pieces hold their shape.
  • Perfect for meal prep. Kabocha no nimono is delicious warm or chilled. You can just serve chilled on a busy weekday night.

Ingredients

  • Kabocha squash: Kabocha, also called Japanese pumpkin, is a hard round squash with an orange interior and a green exterior. It has a naturally sweet, nutty flavor and dense texture. The skin is edible, so scrub and rinse well to clean before cooking. You'll need about half of a medium kabocha squash for this recipe.
  • Mirin: Mirin is a Japanese sweet rice wine. It adds gentle sweetness and depth to the taste. I recommend using hon mirin for its flavor.
  • Maple syrup: I like maple syrup for its complex flavor and use it to add sweetness to the savory seasoning. You can also use granulated sugar.
  • Soy sauce: Creates a great savory base and balances the sweetness of the kabocha and maple syrup. Adding it toward the end of cooking helps preserve the soy sauce's savory aroma.

Do you eat the skin of kabocha squash?

Yes, kabocha squash skin is completely edible! The outer peel becomes tender after it's cooked. It adds nice color and texture contrast. It also helps keep the flesh intact while simmering.

This is the number one question I get asked every time I post kabocha squash recipes on my social media. Rest assured, you can eat the skin! It's not tough or fibrous when properly cooked, and you can save so much time by not peeling it!

If you wish to peel the skin, I recommend slicing off the skin section by section rather than trying to peel it. Kabocha is quite a tough vegetable, so you can't "peel" it like an apple. Check out the How to Cut Kabocha Squash post for more details!

How to Prepare Kabocha Squash for Nimono

Cutting kabocha squash can be intimidating. Some people use a microwave to soften it before cutting. I personally don't use a microwave, because with a few tips in mind, cutting it can be easier than you think!

When you're cutting kabocha, use these tips:

  • Use a rocking motion to gently sink the knife into the flesh.
  • Do not push! Uncontrolled force can be dangerous.
  • If the knife gets stuck, don't force it. Carefully remove the knife and start again.
  • I like starting by removing the top and bottom stems, cutting into halves, removing seeds, then cutting into chunks.

For the detailed method with images, please check out the How to Cut Kabocha Squash post.

Kabocha squash cut into evenly sized pieces on a wooden cutting board, with the seeds and a halved squash nearby.
  1. After removing the seeds, cut it into 1¼-1½ inch (3-4 cm) pieces. The way I like to do it is to cut kabocha squash into quarters, then cut each quarter in half. Then cut each halved quarter into 5 pieces. You'll get about 10 pieces from a quarter of a medium-sized kabocha squash. But always adjust depending on the size of your squash.
Close-up of kabocha squash pieces with decorative leaf vein patterns carved into the dark green skin.
  1. (Optional) I like making decorative cuts on the triangular pieces. By adding leaf vine lines, they look like cute leaves!

How to Make Kabocha no Nimono (Step-by-Step)

I cook kabocha in a single layer in a pot. This helps the pieces cook evenly and allows the simmering liquid to reach each piece more evenly. So I recommend using a wide-bottomed pot.

I used a 4-quart (24 cm) Staub Dutch oven for this recipe.

Kabocha squash pieces arranged in a single layer in a red Dutch oven with sweet-and-savory simmering liquid.
  1. In a pot, arrange kabocha in a single layer with the skin side down. Add water, maple syrup, mirin, and a pinch of salt. Cover, bring it to a boil over medium heat, and cook for 5 minutes. Then uncover and continue cooking until the kabocha is tender, about 5-10 minutes. You don't need to flip or stir. If the pot looks too dry, add a splash of water to prevent scorching.
Kabocha no nimono, Japanese simmered kabocha squash with decorative leaf cuts, served in a pink bowl alongside rice, miso soup, and kinpira gobo.
  1. Add soy sauce and cook for 1 minute. Remove from the heat and let sit for 15 minutes. Kabocha squash continues to absorb the flavor while cooling.

Yoko's Tips for the Best Simmered Kabocha

  • Use a wide-bottomed pot. Cooking kabocha arranged in a single layer is the key to even cooking and seasoning. You don't need to completely submerge the squash in the simmering liquid. A wide-bottomed pot allows the simmering liquid to reach each piece.
  • Keep the skin on. The dark green skin becomes tender when cooked and helps the pieces hold their shape. It also creates a beautiful contrast with the orange flesh.
  • Simmer gently. Once the water comes to a boil, maintain a gentle simmer. Vigorous boiling can cause the delicate kabocha flesh to break apart.
  • Don't stir the kabocha. You don't need to stir or flip kabocha. Instead, let it simmer undisturbed to help preserve its shape.
  • Add soy sauce toward the end. I like adding soy sauce at the last minute of cooking to preserve its savory aroma.
  • Let it rest before serving. After removing the pot from the heat, let the kabocha rest for 15 minutes. The squash continues to absorb the sweet-and-savory seasoning as it cools.

How to Prevent Kabocha from Falling Apart

One of the challenges of making kabocha no nimono is keeping the pieces intact while making the flesh soft and fluffy. Kabocha can become delicate as it cooks, especially when it's cut into small pieces or simmered too long.

Here are a few things to keep in mind:

  • Cut into even-sized pieces. I recommend cutting the kabocha into 1¼-1½-inch pieces. Smaller pieces can soften too quickly and fall apart during cooking.
  • Avoid vigorous boiling. Boiling can move the pieces around and bump into each other. Adjust the heat to keep the gentle simmer.
  • Check for doneness early. Cooking time can vary depending on the size and thickness of your squash. Insert a skewer into the thickest part. It should slide through easily without the flesh falling apart.
  • Avoid unnecessary handling. No need to stir or turn the pieces.

Even if your kabocha gets a few cracked edges, don't worry! Once kabocha gets tender, it tastes great anyway.

Variations

  • Use dashi for added umami. Replace the water with Japanese dashi to boost the flavor. Kombu dashi is a great option if you prefer a plant-based version.
  • Adjust the sweetness. Kabocha squash varies in natural sweetness. You can slightly reduce the maple syrup if you prefer a less-sweet nimono.
  • Use granulated sugar. Traditional Japanese recipes often use sugar for sweetness. You can use granulated sugar instead of maple syrup, adjusting the amount to taste.
  • Kabocha korokke. Drain and mash leftover kabocha and shape into rounds. Coat them in flour, egg, then panko breadcrumbs and fry until golden.
  • Kabocha salad. Drain the kabocha from the seasoning. Then toss it with Kewpie mayo, blanched broccoli, and raisins.

How to Serve Kabocha no Nimono

Kabocha no nimono makes a great side dish in a Japanese-style meal. It can be served family-style or in a small bowl called kobachi (小鉢). Kobachi means small bowl in Japanese, but it often refers to the small side dishes served in kobachi bowls.

An assortment of small kobachi dishes makes a Japanese meal so fun, colorful, and flavorful. You can serve just one kobachi dish for your meal. But mixing and matching several kobachi dishes makes your meal even more enjoyable.

So try these Japanese sides together:

  • Kinpira Gobo: burdock root and carrots stir-fried in a sweet-and-savory sauce.
  • Agedashi Tofu: fried tofu dish served in a warm, savory dashi sauce.
  • Sunomono: cucumber salad tossed in a sweet-and-tart rice vinegar dressing.
  • Tamagoyaki: slightly sweet rolled omelette.
  • Natto: fermented soybeans.

Kobachi dishes usually accompany rice, miso soup, and main dishes as part of a balanced meal.

Try these recipe ideas to serve with kabocha no nimono as part of a Japanese teishoku meal!

  • Rice: Plain steamed rice with Kombu Tsukudani or simple takikomi gohan (seasoned rice) like Japanese Sweet Potato Rice.
  • Soup: Kabocha Squash Miso Soup, Japanese Sweet Potato Miso Soup, and Shio Koji Tomato Soup.
  • Main Dishes: Air Fryer Karaage, Shio Koji Salmon, Shio Koji Chicken, and Nikujaga.
Japanese home-style meal featuring kinpira gobo, simmered kabocha squash, rice with gomashio, tofu miso soup, and boiled eggs.

Storage and Reheating

Before storing, let the kabocha no nimono cool and drain the simmering liquid.

Refrigerator: Then transfer it to an airtight container. Refrigerate for up to 2-3 days. Kabocha no nimono can be enjoyed warm or chilled.

Freezer: You can freeze simmered kabocha in individual portions in freezer-safe containers for up to 2-3 weeks for best quality. Keep in mind that the texture may become softer or slightly watery after thawing. You can thaw in the fridge overnight or microwave gently until warm.

More Japanese Home-Style Recipes

If you love Japanese dishes, try these recipes next!

  • Strawberry Mochi
  • Mitarashi Dango
  • Japanese Sesame Dressing
  • Tamago Sando
  • Tuna Mayo Onigiri
  • Natto Maki
Kabocha no nimono, Japanese simmered kabocha squash with decorative leaf cuts on the green skin, served in a pink bowl alongside Japanese side dishes.

Kabocha no Nimono (Japanese Simmered Kabocha)

Yoko Segawa
Kabocha no Nimono is a classic Japanese home dish. Kabocha squash is gently simmered in sweet-and-savory seasonings until tender and fluffy, while the edible green skin adds beautiful color and textural contrast. This simple side dish is made with a handful of ingredients and is a great way to enjoy the natural sweetness of kabocha squash.
Print Recipe Pin Recipe
Prep Time 5 minutes mins
Cook Time 15 minutes mins
Chill time 15 minutes mins
Total Time 35 minutes mins
Course Side Dish
Cuisine Japanese
Servings 4 servings
Calories 93 kcal

Equipment

  • 1 heavy bottomed pot

Ingredients
  

  • ½ medium kabocha squash about 600 g/1.3 lb, cut into 1¼-1½ inch (3-4cm) pieces
  • 1 cup water
  • 2 tablespoons mirin
  • 2 tablespoons maple syrup
  • 1 tablespoon soy sauce
  • A pinch of salt

Instructions
 

  • In a pot, arrange kabocha in a single layer with the skin side down. Add water, maple syrup, mirin, and a pinch of salt. Cover, bring it to a boil over medium heat, and cook for 5 minutes. Then uncover and continue cooking until the kabocha is tender, about 5-10 minutes. You don't need to flip or stir. If the pot looks too dry, add a splash of water to prevent scorching.
  • Add soy sauce and cook for 1 minute. Remove from the heat and let sit for 15 minutes. Kabocha squash continues to absorb the flavor while cooling.

Notes

Yoko's Tips for the Best Simmered Kabocha

  • Use a wide-bottomed pot. Cooking kabocha arranged in a single layer is the key to even cooking and seasoning. You don't need to completely submerge the squash in the simmering liquid. A wide-bottomed pot allows the simmering liquid to reach each piece.
  • Keep the skin on. The dark green skin becomes tender when cooked and helps the pieces hold their shape. It also creates a beautiful contrast with the orange flesh.
  • Simmer gently. Once the water comes to a boil, maintain a gentle simmer. Vigorous boiling can cause the delicate kabocha flesh to break apart.
  • Don't stir the kabocha. You don't need to stir or flip kabocha. Instead, let it simmer undisturbed to help preserve its shape.
  • Add soy sauce toward the end. I like adding soy sauce at the last minute of cooking to preserve its savory aroma.
  • Let it rest before serving. After removing the pot from the heat, let the kabocha rest for 15 minutes. The squash continues to absorb the sweet-and-savory seasoning as it cools.
 
Please note that the nutritional information provided is just an estimate, and accuracy is not guaranteed.

Nutrition

Serving: 1servingCalories: 93kcalCarbohydrates: 23gProtein: 2gFat: 0.2gSaturated Fat: 0.04gPolyunsaturated Fat: 0.1gMonounsaturated Fat: 0.01gSodium: 336mgPotassium: 557mgFiber: 2gSugar: 11gVitamin A: 2051IUVitamin C: 18mgCalcium: 56mgIron: 1mg
Keyword Healthy Meal, kabocha squash, pumpkin, vegan
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Related

More Japanese Side Dishes

  • Kinpira gobo with burdock root, carrots, and sesame seeds served alongside steamed rice, boiled eggs, and miso soup.
    Kinpira Gobo: Japanese Burdock Root and Carrot Recipe
  • Japanese sweet potato miso soup with tofu, shimeji mushrooms, onion, and green onion in a wooden bowl.
    Japanese Sweet Potato Miso Soup
  • Agedashi tofu with fried eggplant, grated daikon, green onion, and warm dashi sauce, served on a wooden tray.
    Agedashi Tofu
  • Kombu tsukudani served over steamed rice with chopsticks lifting the sweet-savory simmered kombu.
    Kombu Tsukudani

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I’m Yoko, a matcha lover, mom, and Japanese native who is passionate about sharing healthy plant-forward versions of the Japanese food I grew up with. From seasonal recipes to koji fermentation, I’m sharing Japanese-inspired, colorful recipes that you can easily try at home. I hope these recipes bring joy and harmony to your kitchen!

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