Healthy Walnut Pesto

Healthy Walnut Pesto

Made with heart-healthy walnuts, this healthy walnut pesto is a nutritious spin on an Italian-staple. Get the recipe now.

There are few things better than homemade pesto.

Made with fresh, high quality ingredients, the simplest dish can be elevated with a spoonful of pesto.

I’m giving this green condiment an extra nutrition boost with heart-healthy walnuts in place of the traditional pine nuts.

Inspiration for this healthy walnut pesto

I was never much of a pesto person growing up. Sure, I had pesto here and there, but it was usually the jarred stuff. In fact it wasn’t until college when I met Bry that I finally got what the hype was about this green sauce.

During college, Bry took the opportunity to study abroad in Rome for a summer term. And along with some beautiful earrings, he also brought back a love of homemade pesto.

While fresh basil, extra-virgin olive oil, and pine nuts aren’t the cheapest things for college kids to buy, it was worth the splurge each time we made it.

Bowl of homemade walnut pesto with olive oil

Jump forward five years and we found ourselves on our honeymoon in the Cinque Terre – the birthplace of pesto.

We got to relax at a vineyard, a glass of wine in hand and enjoyed pesto made from ingredients that were all grown onsite. Life was so good.

While I don’t expect anyone to be making their own olive oil or Romano cheese, I do strongly encourage you to buy top quality ingredients for this pesto. Yes, it’s a little more expensive, but the richness in flavor is worth it.

Ingredients for walnut olive oil pesto

What You’ll Need

  • Freshly grated Romano cheese
  • Walnuts, unsalted
  • Fresh basil
  • Garlic
  • Lemon juice
  • Salt
  • Water (trust me)
  • Extra-virgin olive oil

Okay, so water may seem strange, but in my quest to lighten up this pesto just a smidge, I needed to reduce the olive oil.

However, the result was a super thick paste. To thin it out, I added a little water and was pleasantly surprised that the flavors didn’t get muddled or watered down.

The recipe as-written still makes a thicker pesto, perfect for spreading on bruschetta or stirring into hot pasta, but if you want your pesto a little thinner, you can either add a little more water or oil, depending on your preference.

Using walnuts in pesto

Over the years I’ve experimented with subbing in different types of more budget-friendly nuts for the pine nuts.

Walnuts in particular are packed full with heart-healthy unsaturated fatty acids. As a result, the nutrition nerd in me couldn’t help but love the idea of making an ultimate Mediterranean diet pesto by using both walnuts and olive oil.

While I’m often lazy and just use raw walnuts to make this pesto, there is a slight bitterness that goes away if you use roasted walnuts instead.

Step-by-Step Instructions

Step 1: Measure out the ingredients.

Ingredients for homemade walnut pesto: walnuts, garlic, extra virgin olive oil, fresh basil and parmesan cheese

Step 2: Place basil, garlic, cheese, walnuts, lemon juice, 1 tablespoon of water and salt in a food processor.

Pulse mixture until basil is fully chopped and ingredients are combined.

Fresh basil, walnuts, and parmesan cheese in food processor

Step 3: With the food processor running on low, slowly pour olive oil into the food processor until well-combined.

Homemade walnut pesto in the food processor

Step 4: Once the oil is fully incorporated, scrape down the sides, taste and adjust as needed. If you want a thinner pesto, add more water, 1 teaspoon at a time until it reaches your desired consistency.

Storing Walnut Pesto

Spoon pesto into a sealable container and keep stored in the fridge for up to a week. You’ll know pesto has gone bad when it turns brown and has a rancid taste. Pesto also freezes really well!  

Bowl of homemade walnut pesto with olive oil

Are you a pesto traditionalist?

Or do you like to play around with the ingredients? I’d love to hear your go-to recipes in the comments below! And be sure to Pin this recipe before you go!

Recipes to use this Healthy Walnut Pesto on

Heart Healthy Walnut Pesto

Made with quality ingredients, this traditional pesto gets a heart-healthy spin with walnuts in place of pine nuts.
Prep Time10 mins
Course: Condiment
Cuisine: Italian, Mediterranean
Keyword: Heart-Healthy, Homemade Pesto
Servings: 8
Calories: 88kcal
Author: Kelli


  • 2 cups fresh basil leaves tightly packed
  • ¼ cup walnuts
  • 1 clove garlic
  • ¼ cup freshly grated Romano cheese
  • teaspoon salt or more to taste
  • ½ teaspoon fresh lemon juice
  • 1 tablespoon of water
  • 3 tablespoons extra-virgin olive oil


  • Place basil, walnuts, garlic, cheese, salt, lemon juice and water in a food processor. Pulse until basil is chopped small and ingredients are fully combined.
  • Place processor on low and slowly drizzle in olive oil. Continue mixing until fully combined.
  • Scrape down the sides, taste and adjust as needed. If you want a thinner pesto, add more water, 1 teaspoon at a time until it reaches your desired consistency.
  • Transfer pesto to a sealable container and store in fridge for up to one week.


Nutrition for ⅛ of recipe (about 1 tablespoon): 88 calories, 9 g fat (2 g saturated, 4 g monounsaturated, and 2 g polyunsaturated), 2 g carb, 0 g fiber, 0 g sugar, 2 g protein
Homemade walnut pesto Pinterest image

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About Kelli McGrane Headshot

I’m Kelli MS, RD, and my mission is to prove that eating healthier doesn’t have to be complicated or restrictive. Follow along to learn more about food and cooking, with an emphasis on breakfast and sweet treats!

About Kelli McGrane Headshot

Welcome to The Healthy Toast!

Here you’ll find realistic healthy recipes designed by a registered dietitian with your busy lifestyle in mind.

Whether you’re a busy professional or new mom, the goal of The Healthy Toast is to provide you with the recipes and nutrition info you need to live your healthiest life, even when life gets crazy. As I’m a firm believer in a whole-foods, non-diet approach, I hope my website shows that good nutrition doesn’t have to be complicated or restrictive. 

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