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onion steak on a white small plate

Japanese Soy Garlic Onion ‘Steaks’

  • Author: Lisa Kitahara
  • Total Time: 15 minutes
  • Yield: 1 serving 1x


These juicy, sweet and tender onion steaks are the perfect way to enjoy whole onions! Infused with the classic Japanese soy garlic steak flavours, delicious with sandwiches, burgers, rice and more. 




  1. Slice onions into 3-4 cm thick rounds. Place the onion rounds into a microwave safe container or dish and sprinkle with kombu dashi granules. Cover and microwave each side for 1 1/2 – 2 minutes or until mostly cooked through (it will start to look more transparent and smell sweet). 
  2. Heat 1 tbsp of cooking oil over medium high heat and carefully place the onions on the pan. Cook until you get nice charring (about 1 minute). Flip and cook other side (about 1 minute). Move the onions to one side of the pan and then add the garlic, mirin and sake. Cook for about 20 seconds (the sake will begin to evaporate). Then add in the soy sauce, sugar and water and swirl the pan to coat the bottom of the onions. Cook until sauce is slightly reduced. Carefully flip the onion and then cook the other side coating it with the sauce until thickened. Remove from heat, serve and enjoy!


  • Prep Time: 5 minutes
  • Cook Time: 10 minutes
  • Category: side dish
  • Method: stove top
  • Cuisine: vegan, gluten free, japanese


  • Serving Size: 1 serving
  • Calories: 348
  • Sugar: 24.3
  • Sodium: 1014mg
  • Fat: 11.5
  • Saturated Fat: 3.2
  • Unsaturated Fat: 7.7
  • Trans Fat: 0
  • Carbohydrates: 52.9
  • Fiber: 6.7
  • Protein: 6.4
  • Cholesterol: 0

Keywords: onion steaks, vegetable steaks, vegan steaks, vegetarian steaks, onion recipes