A black round ceramic plate containing roasted kabocha slices.

Come fall, I’m all about kabocha squash. One of the easiest and delicious ways to enjoy this seasonal gem? Simply roasting it in a hot oven. It roasts up beautifully, with edible crispy skin and an amazing caramelizing buttery texture. With simple Japanese seasonings, it makes the perfect fall dish to treasure. Here’s how to cook roasted kabocha squash!

A white round ceramic plate containing roasted kabocha slices.

What is Kabocha Squash?

Kabocha (かぼちゃ, 南瓜), or Japanese pumpkin, is a beloved Japanese winter squash known for its exceptional sweetness, rich flavor, and versatility. It has a tough outer skin, but once cooked, the skin becomes edible and the flesh creamy, fluffy and tender. The flavor will remind you of a hybrid of sweet potato and butternut squash with a hint of roasted chestnut. Kabocha is also highly nutritious, which makes it a great addition to your diet for the season.

You can easily find kabocha squash in the US these days—either at farmers markets or mainstream grocery stores. Japanese grocery stores actually carry kabocha year-round!

Kabocha | Easy Japanese Recipes at JustOneCookbook.com

If you’re new to kabocha, learn more about this Japanese squash here.

Kabocha has long been a staple of Japanese cuisine, especially during the wintertime. There is a tradition of eating kabocha to stay strong and bring good luck during the winter solstice. So what are the most popular ways to enjoy kabocha in Japan? Here are the top 10 recipes.

Were you surprised that roasted kabocha is not on the list? Baking or roasting vegetables in the oven is not a common cooking method in Japan due to the small kitchen space. More people have a countertop oven in their kitchen these days, yet it is still a less common preparation.

Since I love roasted vegetables (I know, squash is technically a vegetable) during this time of year, I’ll share how I prepare roasted kabocha for my family.

A white round ceramic plate containing roasted kabocha slices.

Japanese Roasted Kabocha – 2 Delicious Flavors!

As with all squashes, roasted kabocha squash is amazing with just salt and pepper, but I love to flavor it with a touch of Japanese flair. All you need:

As you see, it’s really simple, yet it’s effective to bring out the natural kabocha flavor. Kabocha already has a beautiful flavor on its own, so it’s best to keep the seasonings simple and minimal. The squash itself is sweet enough and there’s no need to sweeten it further with maple syrup.

If you have cooked Japanese dishes, you should have Japanese soy sauce already, and maybe shichimi togarashi, too. I hope you give both flavors a try!

A baking sheet containing roasted kabocha slices.

How to Cook Japanese Roasted Kabocha

Ingredients You’ll Need

  • Kabocha
  • Salt
  • Black pepper
  • Oil
  • Flavor 1: Shichimi togarashi (Japanese seven spice)
  • Flavor 2: Soy sauce + a little bit of sugar

Overview: Cooking Steps

  1. Remove seeds and cut kabocha. Yes, we cut it into thin wedges so that we can eat the roasted kabocha with chopsticks. If you are going to eat this dish with a fork, you can cut the kabocha into thicker slices, but the roasting time will be longer.
  2. Toss the kabocha slices with oil, salt, and black pepper. Sprinkle shichimi togarashi (option 1) or add soy sauce and sugar (option 2) and toss to coat.
  3. Bake the kabocha until tender.
Black and white round ceramic plates containing roasted kabocha slices.

Tips to Make the Best Roasted Kabocha

  • Cut the kabocha into a uniform shape and size (a sharp knife is mandatory). Make sure the kabocha slices have an even thickness and size, as this will help to achieve perfect doneness at the same time. Read this post on how to cut kabocha.
  • Dry the kabocha with a paper towel to remove any excess moisture. It’s important to keep the vegetable dry for roasting, so it roast up nice and crisp.
  • Use your hands and a big bowl to toss the kabocha and coat it with oil. You can also do this on the baking sheet if you’re making one flavor of the roasted kabocha. Kabocha slices should be well-coated with a thin layer of oil. Don’t just drizzle the oil from the bottle and start baking.
  • Roast at 450ºF (230ºC) for 15 minutes, and then broil for 2-3 minutes for deep char. I recommend using a higher baking temperature than the usual 425ºF (218ºC) for roasting vegetables. So you get a nice char and the kabocha doesn’t get too mushy.
  • Rotate the baking sheet halfway through. Don’t forget to switch around the baking sheet if you’re baking two sheets in the oven at the same time.
  • Broil or bake on a higher rack for extra nice char. For crispy edges, switch to a broiler or bake extra few minutes toward the end.
A white round ceramic plate containing roasted kabocha slices.

What to Serve Roasted Kabocha with

A black round ceramic plate containing roasted kabocha slices.

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4.60 from 20 votes

Japanese Roasted Kabocha Squash

Looking for a quick and delicious way to enjoy kabocha squash? Try this Japanese-style Roasted Kabocha Squash that's thinly sliced and oven-baked until slightly charred and fork-tender. I'll show you how to flavor it with either shichimi togarashi spice blend or sweetened soy sauce. These classic Japanese seasonings enhance the natural sweetness and beautiful flavor of the kabocha.
Prep: 10 minutes
Cook: 20 minutes
Total: 30 minutes
Servings: 4

Ingredients 
 

For the Shichimi Flavor

For the Sweetened Soy Sauce Flavor

  • 2 tsp soy sauce (use GF soy sauce for gluten free)
  • ½ tsp sugar

Instructions

  • Gather all the ingredients. Set two oven racks at the upper top and lower middle positions. Preheat the oven to 450ºF (230ºC). For a convection oven, reduce the cooking temperature by 25ºF (15ºC).
    Roasted Kabocha Ingredients

To Prepare the Kabocha

  • Using a spoon, scrape out and discard the seeds from 1¾ lb kabocha squash. The kabocha skin is edible and nutritious, so rinse and pat it dry with a paper towel.
    Roasted Kabocha 1
  • Cut the kabocha in half widthwise, cutting through the middle of the U-shaped piece. Cut off the stem end, if any. Tip: When the kabocha pieces are shorter, the knife can slice through more easily.
    Roasted Kabocha 2
  • Slice the kabocha thinly, about ⅛ to ⅕ inch (3–5 mm) thick.
    Roasted Kabocha 3
  • Transfer the kabocha slices to a large bowl. Add 2 Tbsp neutral oil, ½ tsp Diamond Crystal kosher salt, and ¼ tsp freshly ground black pepper.
    Roasted Kabocha 4-1
  • Using your hands (or a spoon), toss the kabocha with the oil and seasonings to coat well. Then, transfer half of the slices to another bowl.
    Roasted Kabocha 4

To Add the Shichimi Togarashi

  • Sprinkle ½ tsp shichimi togarashi (Japanese seven spice) over the kabocha slices in one bowl and toss to coat.
    Roasted Kabocha 5

To Add the Sweetened Soy Sauce

  • Add 2 tsp soy sauce and ½ tsp sugar to the kabocha slices in the other bowl and toss everything well.
    Roasted Kabocha 6

To Roast the Kabocha

  • Prepare two baking sheets lined with parchment paper. Place the shichimi-flavored kabocha slices in a single layer on one baking sheet and the soy sauce-flavored kabocha on the other. Don‘t crowd the baking sheets. Tip: If you‘d like a deeper char on the kabocha slices, do not use the parchment paper and bake directly on the baking sheet. This way, you can safely broil the kabocha slices longer without worrying about any paper catching on fire.
    Roasted Kabocha 7
  • Place the baking sheets in the oven on the upper and lower racks (you‘ll switch their positions later). Bake at 450ºF (230ºC) for 10 minutes. Then, take out the two baking sheets.
    Roasted Kabocha 8
  • Using tongs, flip the kabocha slices. Put the baking sheets back into the oven, rotating the directions of the pans and switching their positions on the upper and lower racks for even baking. Bake for an additional 5 minutes or until the kabocha is fork-tender. If you cut the slices thicker than I did, it may take slightly longer to cook. Next, switch to the Broil setting and broil high for 2–3 minutes until slightly charred. Tip: Make sure the upper rack is at least 4 inches away from the heating element so your parchment paper doesn‘t catch on fire. Watch it closely.
    Roasted Kabocha 9
  • Remove the upper baking sheet from the oven. Next, move the lower baking sheet to the upper rack and broil high for 2 minutes.
    Roasted Kabocha 10
  • Let the first baking sheet cool on a wire rack. After 2 minutes, take out the second baking sheet and let it cool on a wire rack.
    Roasted Kabocha 11
  • Transfer the Japanese Roasted Kabocha Squash to two plates and enjoy!
    A white round ceramic plate containing roasted kabocha slices.

To Store

  • You can keep the leftovers in an airtight container and keep them for 3 days in the refrigerator or for up to a month in the freezer.

Nutrition

Calories: 123kcal, Carbohydrates: 16g, Protein: 2g, Fat: 7g, Saturated Fat: 1g, Polyunsaturated Fat: 4g, Monounsaturated Fat: 2g, Trans Fat: 0.04g, Sodium: 311mg, Potassium: 602mg, Fiber: 3g, Sugar: 4g, Vitamin A: 2399IU, Vitamin C: 21mg, Calcium: 49mg, Iron: 1mg

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