Zucchini with Walnut Watercress Pesto is an amazingly light and summery lunch that can be prepared in minutes, especially if you make the pesto the night before!

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With such an array of superfood ingredients to boost health and wellness, this is definitely one of our favourite summer lunches. No need to wait for summer though!
Watercress is a green leafy vegetable in the same family as kale, brussel sprouts, cabbage and broccoli.
It certainly is a powerhouse food, packed with many natural phytonutrients and a host of vitamins and minerals. See the nutritional links below for more information on this fabulous plant.
Watercress has small leaves and edible stems that impart a lovely peppery, slightly spicy flavour. Great just eaten raw in salads but also wonderful blended into a pesto.
The addition of Walnuts further enhances the nutritional value of this dish. Walnuts and walnut oil are rich in antioxidants, they contain protein, omega 3 fats, vitamins B6 and E, potassium, magnesium, copper and zinc, amongst others, all of which are great skin-loving beauty foods too!
One of walnut's most valuable properties is in fighting inflammation which is so important for many health concerns.
Using Courgettes spiralised in place of regular spaghetti pasta brings a freshness to this dish and is, of course, gluten-free and egg-free for those who are following special diets.
Also if you want to cut down on the carb content of a meal, mixing some regular pasta with spiralised courgettes (zucchini) is a great compromise and also adds extra vegetables. My children eat a combination and are used to the addition!
What is spiralizing?
A spiralizer is a tool (see photo below) that is used to create/spiralise thin spaghetti-like noodles with some vegetables. It has different inserts to create an assortment of shapes and thicknesses.
Not all vegetables are suitable for spiralizing but zucchini, cucumbers, beets, sweet potatoes and carrots are our favorites to incorporate into dishes.
We peel some vegetables before spiralizing but leave the peel on courgettes for added nutrition. Zucchini are soft and very easy to spiralize.
Finally peas are a great addition to our dish, they are actually not a vegetable but a legume. They are naturally high in vegetable protein and a fantastic source of fiber.
Ingredients for Zucchini Walnut Watercress Pesto
- Watercress
- Garlic cloves
- Walnuts
- Parmesan cheese
- extra virgin olive oil
- salt and black pepper
How to make Zucchini Walnut Watercress Pesto
- Place the Watercress, garlic, walnuts and Parmesan cheese in a blender and blend until you have a finely chopped consistency.
- Watch out for the walnuts, too much blending at this stage will turn them into walnut butter.
- Keep blending whilst adding the olive oil slowly until you have a gloriously green sauce. Add as much or as little oil as it takes to reach this stage. Don’t overdo it though!
- Season to taste.
- Spiralize one very large Zucchini for 2 people.
- Cook some frozen peas in boiling water for 3-4 minutes, take off the boil and add the spiralised Courgette to the water. Leave to stand for 2-3 minutes to soften, more if you like them softer.
- Drain both well and add your Walnut Watercress Pesto to the vegetables and serve immediately.
Can I freeze this Zucchini dish?
Zucchini with Walnut Watercress Pesto is best made and eaten fresh rather than frozen. Zucchini have a high water content and once defrosted would become watery and mushy, which would make the sauce too liquid.
Zucchini is so easy and quick to put through the spiralizer to create zucchini noodles, much better to prepare fresh when needed.
Regular pasta recipes:
- Vegetarian One pan Pasta
- Giant Stuffed Pasta Shells with Butternut Squash sauce
- Roasted Cauliflower Mac and Cheese
- Pea Pesto Pasta
Nutritional Info Links:
Zucchini with Walnut Watercress Pesto
Ingredients
For the Pesto
- 85 grams Watercress
- 2 garlic cloves, minced
- 70 grams Walnuts, broken up
- 40 grams Parmesan cheese, grated
- 120 ml approx extra virgin olive oil
- salt and black pepper
- 100 grams frozen peas
- 1 large zucchini
Instructions
- Blend the Watercress, garlic, walnuts and Parmesan cheese in a blender until you have a finely chopped consistency. Â
- Watch out for the walnuts, too much blending at this stage will turn them into walnut butter.
- Keep blending whilst adding the olive oil slowly until you have a gloriously green sauce.  Add as much or as little oil as it takes to reach this stage.  Don’t overdo it though!
- Season to taste.
- Spiralise 1 very large Zucchini for 2 people.
- Cook some frozen *peas in boiling water for around 3 minutes, take off the boil and add the spiralized zucchini to the water. Leave to stand for 2-3 minutes to soften, more if you like it softer. Â
- Drain both well and add your Walnut Watercress Pesto to the vegetables and serve immediately.
Recipe Notes
*Nutritional data is provided as a courtesy and is accurate to the best of my knowledge. You can verify it using the nutrition calculator of your choice. All data is based on net carbs, without sugar alcohol: Swerve, Erythritol, Monk Fruit or Allulose.
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Tracey
What a nice fresh pesto and I love zucchini noodles!
http://wp.me/p8O95v-4N
Jacqui Bellefontaine
I love pesto in all its forms and watercress certainly ticks all the right boxes. What a perfect summer lunch indeed.
Thank you for sharing on #CookBlogShare
Joni Gomes
Such a great simple and healthy meal! Loved the addition of watercress!
Jean Choi
Yum! Love refreshing and healthy recipes like this!!
Stacey L Crawford
I've never tried Pesto with walnut & watercress before. I'm so excited to try this with the zucchini noodles. Perfect for meatless Monday.
ChihYu
So delicious! Great textures and flavors!
Heather Harris
Man, do I love pesto! I realize after reading your post that watercress is an often forgotten powerhouse food. I'm definitely excited about adding it into pesto, and other recipes, in the future!
ND
Yes me too Heather, I make a lot of different combinations too!
Heather@EasyKetoDishes
All the flavor and all the nutrients, this one has it all doesn't it!
ND
It really does Heather!
linda spiker
This is stunning! I have never tried water cress pesto.
ND
Thanks Linda!
Don Baiocchi
I'm always looking for ideas on how to use watercress and I also love pesto so I can't wait to try this!
ND
Do try it, watercress brings a different flavour, but so delicious!
Annemarie
This is so delicious! I love the bright green color - you know it's healthy!
ND
Green is good Annemarie, pesto's are a great way to add goodness in!
jennifer
Sounds so very light and refreshing, I can't wait to try it!
ND
Thanks Jennifer!
Mirlene
Very healthy and delicious meal. Perfect for busy weeknights.
ND
Thanks Mirlene!
Zuzana
One great looking dish
ND
Thank you Zuzana!
Raia Todd
Gorgeous plate of 'pasta'! I love using courgettes for a delicious pasta replacement. 🙂 Your pesto sounds like a delicious topping!
ND
Veggie "pasta's" are great!
Erin
I love how easy this sounds! And with watercress?! Sounds interesting!
ND
Super easy Erin!