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Slow Cooker Tom Kha Soup

Slow cooker Tom Kha soup in a white bowl garnished with cilantro and lime

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Authentic and aromatic Thai Tom Kha soup made effortlessly in your slow cooker. Creamy coconut milk, lemongrass, galangal, and tender chicken come together in a tangy, spicy, comforting bowl. Naturally gluten-free and high protein.

Ingredients

Scale
  • 1 (13.5 oz) can full-fat coconut milk
  • 4 cups chicken or vegetable broth
  • 2 stalks lemongrass, bruised and cut into 2-inch pieces
  • 3 slices galangal (or fresh ginger)
  • 4 kaffir lime leaves, torn
  • 1 lb boneless, skinless chicken thighs, cut into bite-sized pieces
  • 8 oz shiitake mushrooms, sliced
  • 1 cup cherry tomatoes, halved
  • 3 tablespoons fish sauce
  • 2 tablespoons lime juice, freshly squeezed
  • 12 Thai chilies, sliced (optional)
  • 1/2 cup fresh cilantro, chopped

Instructions

  1. Add the coconut milk, chicken broth, lemongrass stalks, galangal slices, and kaffir lime leaves to the slow cooker. Stir to combine.
  2. Add the chicken thighs, sliced shiitake mushrooms, and halved cherry tomatoes to the slow cooker.
  3. Cover and cook on low for 4-6 hours or on high for 2-3 hours, until the chicken is cooked through and breaks apart easily.
  4. About 15 minutes before serving, remove and discard the lemongrass stalks, galangal slices, and kaffir lime leaves.
  5. Stir in the fish sauce, lime juice, and Thai chilies if using. Taste and adjust seasoning as needed.
  6. Ladle into bowls and garnish with fresh cilantro. Serve immediately with jasmine rice or rice noodles.

Notes

  • Bruise the lemongrass stalks by pressing down firmly with the flat side of a knife before adding. This releases the aromatic oils for a much deeper-flavored broth.
  • Do not add fish sauce or lime juice at the start of cooking. Adding them in the last 15 minutes keeps the flavors bright and balanced.
  • Galangal and kaffir lime leaves are available at most Asian grocery stores. Fresh ginger can substitute for galangal, though the flavor will differ slightly.
  • For a vegetarian version, replace chicken with tofu or extra mushrooms, use vegetable broth, and swap fish sauce for soy sauce or tamari.

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