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Vegan Pasta Recipe: Creamy Caramelized Onion Spaghetti

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A creamy, dairy-free pasta made with caramelized onions, blended cashews, and garlic. Sweet, savory, and deeply comforting.

Ingredients

Scale
  • 12 oz linguine or fettuccine
  • 2 large yellow onions, thinly sliced
  • 2 tbsp olive oil or vegan butter
  • ¾ cup raw cashews, soaked
  • 1 cup vegetable broth (plus more as needed)
  • 2 garlic cloves, minced
  • 2 tbsp nutritional yeast (optional)
  • 1 tbsp balsamic vinegar or lemon juice
  • Salt and pepper to taste
  • Optional: thyme, parsley, vegan Parmesan

Instructions

  1. Soak cashews in hot water for 15–30 minutes if not using a high-speed blender.
  2. In a skillet, heat oil and sauté onions over low heat for 30–40 mins until deeply golden. Add garlic and herbs in final minutes.
  3. Blend soaked cashews with broth, nutritional yeast, vinegar, half of the onions, salt, and pepper until smooth.
  4. Cook pasta until al dente. Reserve ½ cup pasta water.
  5. Return remaining onions to skillet. Add sauce and cooked pasta. Toss to coat. Use pasta water to thin if needed.
  6. Serve with fresh herbs and optional toppings.

Notes

  • Sauce can be made ahead and stored for 4 days.
  • For nut-free, use white beans or silken tofu.
  • Add sautéed mushrooms or greens for variation.