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Steaming bowl of spicy peanut udon noodle soup with thick white udon noodles in creamy peanut broth, topped with soft-boiled egg, green onions, and sesame seeds

Spicy Peanut Udon Noodle Soup

This spicy peanut udon noodle soup is a 15-minute comfort food masterpiece. With chewy udon noodles, a creamy peanut butter broth, and a spicy chili oil kick, this recipe delivers restaurant-quality flavor in record time.
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Prep Time 5 minutes
Cook Time 10 minutes
Total Time 15 minutes
Servings: 1 serving
Course: Soup
Cuisine: Asian
Calories: 550
Ingredients Method Notes

Ingredients
  

  • 1 serving frozen udon noodles fresh also works
Soup Base:
  • 1 tsp minced garlic
  • 1 tsp diced green onions
  • 1¼ tsp sugar
  • ½ tbsp chicken bouillon or vegetable bouillon
  • 1½ tbsp oyster sauce
  • 1 tbsp light soy sauce
  • ¼ tsp rice vinegar or apple cider vinegar
  • ½ tsp sesame oil
  • 2 tbsp unsweetened peanut butter or tahini
  • 1 tbsp chili oil adjust to taste
  • 1½ cups hot water
  • ¼ tsp salt optional, adjust at the end
Toppings:
  • 1 boiled or jammy egg
  • Extra green onions
  • Roasted sesame seeds
  • Extra chili oil

Method
 

  1. Cook or soak frozen udon noodles for 1 minute until loosened but still chewy. Drain and set aside.
  2. In a serving bowl, combine garlic, green onions, sugar, bouillon, oyster sauce, soy sauce, vinegar, sesame oil, peanut butter, and chili oil. Mix into a smooth paste.
  3. Pour 1½ cups hot water into the flavor base, stirring until smooth and creamy. Adjust seasoning with salt, sugar, or chili oil as needed.
  4. Add noodles to the broth. Top with egg, green onions, sesame seeds, and extra chili oil if desired.
  5. Serve immediately while hot for best flavor and texture.

Notes

Do not overcook udon—1 minute is plenty. Always mix peanut butter thoroughly before adding hot water to avoid lumps. Adjust chili oil gradually based on brand and spice preference.