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Spaghetti swirled on a black plate with green pasta sauce

Creamy Zucchini Leek and Basil Pasta Sauce

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This vibrant pasta dish brings the taste of an Italian summer right to your kitchen. By blending tender sautéed zucchini and sweet leeks with a splash of milk, fresh basil, and savory Parmesan, you get a luxurious, hidden-veggie sauce without any heavy cream. Quick enough for a weeknight dinner, yet elegant enough for summer entertaining, it's a guaranteed crowd-pleaser that even the kids will love.
Course Sauces
Cuisine Italian
Prep Time 15 minutes
Cook Time 11 minutes
Total Time 30 minutes
Servings 4
Calories 110
Author Janette

Ingredients

  • 3 tablespoons (40 grams) olive oi. plus more if needed
  • 1 pound (453 grams) zucchini/courgette chopped
  • ½ pound (230  grams) leek (1 medium) white and light green parts only, cut in half lengthwise, washed and sliced
  • Salt and pepper to taste
  • 1 large or 2 small garlic cloves peeled and chopped
  • ⅔ cup (156 ml) milk warmed, plus more if needed
  • ½ cup (23 grams)  Parmesan cheese grated, plus more for serving
  • 8 good size basil leaves torn

To Serve:

  • Pasta of your choice

Instructions

  • Heat the olive oil in a large frying pan over medium heat. Add the zucchini and cook for 5 minutes, stirring often, until it begins to soften.
  • Stir in the leeks, a pinch of salt and pepper (add a splash more oil if the pan looks dry). Cook until the leeks soften and the zucchini reduces in size. Add the garlic and toss for about 1 minute just until fragrant—do not let it brown.
  • Pour in the warm milk, Parmesan, and torn basil. Stir well to combine until the Parmesan melts into the milk. Turn off the heat and let the mixture cool slightly.
  • Transfer the cooled zucchini mixture to a blender. Blend until completely smooth. If the sauce feels too thick, add a splash more milk. Taste and adjust the seasoning with extra salt or pepper if needed.

To Serve:

  • Bring a large pot of water to a boil. Add your choice of pasta and cook according to the package directions. 
  • Pour the zucchini sauce back into the large frying pan over low heat to warm through. Don't drain the pasta, use a slotted spoon or tongs to transfer the cooked pasta directly into the sauce, tossing well to coat. If the sauce is too thick, ladle in a splash of the starchy pasta water. Serve immediately, topped with extra Parmesan and fresh basil leaves.

Video

Nutrition

Serving: 1 | Calories: 110kcal | Carbohydrates: 7g | Protein: 5g | Fat: 5g