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Umami Bomb Mushroom Burgers

Scott Phillips

Yield: Makes 8 burgers

This is an exceptionally “meaty” veggie burger, thanks to the deep, savory flavor in the mushrooms and soy sauce, the richness of the cashews, and the pleasantly chewy texture of the rice. Even meat-eaters will be satisfied by this one. For a match made in heaven, top it with Miso Mayonnaise.


  • 1/3 cup uncooked short-grain brown rice
  • 3 Tbs. canola oil
  • 1-1/2 cups chopped yellow onion (about 1 large)
  • 8 oz. cremini mushrooms, sliced (3 cups)
  • 8 oz. shiitake mushrooms, stems discarded, caps sliced (3-1/2 cups)
  • Kosher salt
  • 1 Tbs. finely chopped garlic
  • 3 Tbs. soy sauce
  • 1 cup (about 5 oz.) shelled edamame, thawed if frozen, patted dry
  • 1/2 cup roughly chopped roasted salted cashews
  • 3 Tbs. arrowroot
  • 1 tsp. Asian sesame oil
  • 1 large egg, beaten

Nutritional Information

  • Calories (kcal) : 200
  • Fat Calories (kcal): 100
  • Fat (g): 12
  • Saturated Fat (g): 1.5
  • Polyunsaturated Fat (g): 2.5
  • Monounsaturated Fat (g): 6
  • Cholesterol (mg): 25
  • Sodium (mg): 760
  • Carbohydrates (g): 19
  • Fiber (g): 3
  • Protein (g): 7


  • Combine the rice and 2/3 cup water in a 1-quart saucepan. Bring to a boil, cover, and reduce the heat to low. Simmer until the rice is tender and the water is absorbed, about 40 minutes. Transfer the rice to a large bowl and let stand until cooled to room temperature, about 20 minutes.
  • Heat 1 Tbs. of the canola oil in a 12-inch skillet over medium-low heat. Add the onion and cook, stirring frequently, until browned and softened, about 10 minutes. Increase the heat to medium high and add the mushrooms and a pinch of salt. Cook, stirring occasionally, until the mushrooms are browned, about 7 minutes. Reduce the heat to medium, add the garlic, and cook, stirring, for 30 seconds. Add the soy sauce and stir, scraping up the browned bits on the bottom of the pan, until nearly evaporated, about 1 minute.
  • Transfer the mushroom mixture to a food processor. Add the edamame, cashews, arrowroot, and sesame oil and pulse until finely chopped with a few flecks of edamame and cashews still visible, about 15 one-second pulses. Transfer the mixture to the bowl with the rice and stir thoroughly to combine. Season to taste with salt and pepper. Stir in the egg. Chill the mixture for at least 30 minutes and up to 4 hours.
  • Portion the burger mixture into 8 balls. With moist hands, form into 3-1/2-inch patties about 3/4 inch thick.
  • When ready to cook, heat the remaining 2 Tbs. canola oil in a 12-inch nonstick skillet or cast-iron pan over medium heat. Add the burgers, reduce the heat to medium low, and cook until golden brown on one side, 3 to 4 minutes. Gently flip with a thin spatula and cook until browned and heated through, another 3 to 4 minutes.

Make Ahead Tips

Wrapped well in plastic, the shaped, uncooked burgers keep in the fridge for a few days. You can also freeze them for up to 3 months. Frozen burgers may be a bit more crumbly in the pan, but they’re still more delicious than the ones from a box. Cook frozen burgers straight from the freezer a little lower and a little longer.


Arrowroot is a white, flavorless powder used to thicken puddings and sauces. It’s often used as a vegetarian alternative to gelatin. It works similarly to the breadcrumbs in other burger recipes but is gluten-free. Look for arrowroot in the baking aisle of the supermarket.


Rate or Review

Reviews (10 reviews)

  • allensharon | 01/12/2021

    The recipe is really nice, umami is really the fifth taste in all taste, it makes food tasty, using umami for cooking also make food fast and delicious. you can also get more information about Umami Taste and Umami flavor here-

  • Anna_M | 04/16/2018

    These are absolutely delicious. However, I cannot get them to stay as patties at all. I would describe the consistency as more like chicken salad. Last time I made them, I didn't even try to make them into patties, but enjoyed them as wraps. Perhaps some breadcrumbs would fix this. I am only detracting 1.5 stars because of the consistency/moisture issue. I will definitely continue to make this recipe for flavor.

  • mellomaia91 | 07/04/2017

    This tastes good, but it could use more spice. I didn't have as much trouble keeping these together as other folks did. Instead of an egg, I used Bob's Red Mill egg replacer. Also, I made sure to cook the patties in a cast iron skillet. I tried once with a nonstick skillet, but the cast iron was definitely better, in terms of forming a crust that keeps it together.

  • vegemite | 06/19/2016

    These tasted divine, but like others mention here, they did not bind at all. Despite cooking the mushroom very well, these were way too wet. I suggest cooking the mushrooms as much as possible to remove the moisture, and I think adding breadcrumbs is a must.FC recipes are usually so well developed that it really surprised me that these fell apart. But I glopped the patties in my pan, did my best to flip them. I then lined them on a cookie sheet lined with parchment and put them in the oven at 350 for about 1/2 hour, which helped dry them out.I made these for a casual gathering with friends and got distracted and forgot the miso mayo...but will definitely do so next time.

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