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finished vegan sushi bake in cast iron pan with toppings in bowls around the sushi bake

Vegan Sushi Bake

This vegan sushi bake is a delicious twist on traditional sushi rolls, made with layers of creamy silken tofu, meaty king oyster mushrooms, and savory sushi rice. It's an easy, crowd-pleasing dish that will satisfy all your sushi cravings.

Course Appetizer, dinner, Main Course
Cuisine American, Japanese
Keyword casserol, sushi
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings 4

Ingredients

  • 3 cups king oyster mushrooms shredded
  • 2 tablespoon soy sauce
  • 300 gram package soft/silken tofu
  • 2 tablespoon sriracha or to taste
  • 1 tablespoon rice vinegar
  • 2 tablespoon vegan mayo
  • 2 nori sheets for sushi rolls
  • 3 cups cooked sushi rice
  • 1 tablespoon rice vinegar
  • 2 teaspoon toasted sesame oil
  • ½ teaspoon salt

Optional toppings & Sides:

  • cucumber, radish, avocado, spicy mayo, green onions, sesame seeds, roasted seaweed snacks

Instructions

  1. Set your oven to roast at 375F.
  2. Cut any dirty or dry bottoms of the king oyster mushrooms and discard. Cut the cap off each mushroom and thinly slice each mushroom cap. Then cut each mushroom stem in half, length-wise. The end of the mushroom should look like a half circle now. Place the flat side of the mushroom down, hold one end of the mushroom in place, and then use a fork to scrape the mushroom, creating a pulled texture. Repeat while rotating the mushroom all around until it is fully shredded.

  3. Once you have 3 cups of pulled mushrooms, add to a non-stick pan over medium heat. Add in 2 tablespoon of soy sauce. The mushrooms will release water as they cook. Continue cooking for about 10-15 minutes, or until the mushrooms have softened and most of the liquid has evaporated.
  4. While the mushrooms are cooking, add the soft tofu, sriracha, 1 tablespoon rice vinegar, and 2 tablespoon vegan mayo to a bowl. Mix together, trying to make it as smooth as possible using a fork or the back of a spoon. The mixture will be textured—that’s okay. See reference photos earlier in the post for a visual example.
  5. Once the mushrooms have cooked, add them to the bowl with the tofu mix and stir to combine.

  6. Mix together the rice, 1 tablespoon rice vinegar, 2 teaspoon sesame oil, and ½ teaspoon salt and place in a 9x9 non-stick baking dish or use a well-seasoned round cast iron pan that is similarly sized. Press down the rice, creating an even surface. You can use freshly cooked sushi rice or leftover rice. If using leftover rice, you may find it easier to work with if slightly heated up first.

  7. Next, rip up the nori sheets into bite-sized pieces. Lay them over the rice layer, overlapping, until it is entirely covered.

  8. Finally, add various dollops of the creamy layer across the nori layer and then spread it out evenly over the top.

  9. Place in the oven at 375F for 10-15 minutes, or until the top starts to become golden and the edges start to crisp up.

  10. Serve warm.

    Suggested serving: grab a sheet of roasted seaweed snack, place a spoonful of the sushi bake inside, add any other toppings, and eat like a mini-sushi-bake-taco bite.

Recipe Notes

Ingredient Substitutions

  • If you don't have king oyster mushrooms, you can sub sliced regular oyster mushrooms. The flavour & texture would be different, but you could also use chopped white button mushrooms or even grated firm tofu. 
  • This recipe is really customisable, you can adjust the seasoning based on your taste and what ingredients you have on hand.