Low FODMAP pesto is proof that life after garlic doesn't have to be bland. As someone who's been living the low FODMAP life for years, I've learned that flavor doesn't have to be the thing you give up…you just have to know how to work around the troublemakers.
This pesto is fresh, vibrant, and packed with basil, zingy lemon, and rich garlic-infused olive oil. Toss it with pasta, spread it on sandwiches, or eat it straight off the spoon. Your digestion might be complicated, but dinner doesn't have to be.
If you've been on the low FODMAP train for a while, you know good sauce recipes and even good low FODMAP recipes are hard to come by. But when they're good? They're good. We love this creamy Low FODMAP Alfredo Sauce for comfort food vibes and our Slow Cooker Pasta Sauce when red sauce cravings hit. Because bland gluten free noodles? Not on our watch.
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Why You'll Love This Recipe
- Big basil flavor, no garlic cloves required.
- No cooking required!
- Works on more than pasta (hello, sandwiches + chicken).
What You'll Need
- Walnuts - A budget-friendly, low FODMAP alternative to pine nuts that still adds richness and a little earthy bite.
- Fresh Lemon Juice - Adds brightness and acidity to balance out the oil and cheese.
- Sea Salt + Black Pepper - Simple seasoning that pulls all the flavors together.
- Fresh Basil Leaves - The star of the recipe. Classic, herby, and bright green.
- Garlic-Infused Olive Oil - All the flavor of garlic, none of the FODMAPs. My favorite brand is Colavita, and I buy it on Amazon.
- Parmesan Cheese - Aged cheese = low lactose. It brings salty, savory depth and that unmistakable pesto vibe.
See the recipe card for the exact measurements and complete instructions.
Selected ingredients are based on guidance on current serving sizes measured by the Monash University Food App and FODMAP Friendly App at the time of publishing. As always, follow your gut and modify as needed.
Step-By-Step Instructions
Step 1: Add the pesto base ingredients
Add the walnuts, lemon juice, sea salt, black pepper, and fresh basil leaves to a large (14-cup) food processor and pulse.
You're looking for a thick, evenly chopped texture, not baby food.
Tip: Scrape down the sides if anything sticks. Leave no leafy clumps left behind.
Step 2: Stream in the oil
With the food processor running, slowly pour in the garlic-infused olive oil. This brings everything together into that creamy, scoopable pesto texture.
Slow and steady wins the pesto race. Don't dump it all in at once!
Step 4: Stir in the cheese
Turn off the processor and stir in the grated Parmesan cheese by hand. This keeps the texture from turning gummy and lets the cheese shine.
Step 4: Serve or Store
Serve right away, or store in an airtight container in the fridge for up to one week. You can also freeze it in small containers or silicone cubes for quick meals later on.
Tips and Tricks
No wet basil leaves! Drying the basil leaves after washing will prevent any extra moisture in the pesto, diluting the flavor.
Don't skip the slow oil drizzle. Pouring the garlic-infused olive oil in slowly helps emulsify the pesto. It makes smooth and creamy pesto instead of oily and separated.
Cheese last, always. Stirring the parmesan in at the end keeps the texture ideal and prevents weird clumping or over-blending.
Make once, freeze for later. Fresh is best, but freezing it also works. I like to freeze it in ice cube trays for quick defrosting, and it's a perfect serving size.
Ingredient Swaps
- No walnuts? Use pine nuts, pecans, or macadamia nuts. They are all great low FODMAP options in small servings and give a similar creamy texture.
- Dairy-free? Skip the parmesan and stir in 1-2 tablespoons of nutritional yeast instead. It adds that cheesy, umami flavor without the dairy.
- No fresh basil? Try a combo of parsley and baby spinach.
- Want more zing? Add a little lemon zest. I love lemons!
Variations
Dairy-Free Pesto - Leave out the parmesan and use nutritional yeast for that cheesy flavor. Bonus: it's vegan too!
Nut-Free Pesto - Skip the walnuts and try sunflower seeds or pumpkin seeds (pepitas)
Cilantro Pesto - Swap the basil for fresh cilantro and use lime juice instead of lemon for a bold, zippy twist.
Spicy Pesto - Add a pinch of red pepper flakes or a splash of garlic-infused chili oil (if tolerated) for a little kick.
Greens-Boosted Pesto - Sub half the basil with spinach or kale for extra nutrients and a milder flavor.
FAQs
Yes! This recipe uses garlic-infused olive oil, which gives you all the garlic flavor without the FODMAPs. It still tastes like the real deal.
Traditional pesto is not low FODMAP because of the garlic. But this low FODMAP pesto recipe is made with Monash-tested ingredients and portion sizes that are gut-friendly.
Parmesan is a great option. It's a hard, aged cheese that's naturally low in lactose and FODMAP-safe in moderate servings.
Absolutely. For a dairy-free and lactose free pesto, leave out the parmesan and stir in nutritional yeast. You'll still get that rich, cheesy flavor without the dairy.
About ¼ cup (or 64 grams), but adjust to what your individual gut tolerates.
Toss it with gluten-free pasta, drizzle it over grilled chicken, spread it on sandwiches, or stir it into roasted veggies. It also makes a delicious low FODMAP sauce for pasta night.
Storing and Reheating
Store: Keep the pesto in an airtight container in the fridge for up to 1 week.
Freeze: Spoon into ice cube trays or small containers, freeze until solid, then transfer to a freezer bag. It'll keep for 2-3 months and defrosts like a champ.
Reheat: No need to actually "reheat," just let it thaw in the fridge. If it separates a little, stir in a splash of warm water or oil, and it'll come right back to life.
Low FODMAP Notes
Low FODMAP ingredient information is based on the Monash University Food App and FODMAP Friendly App testing results as of the day posted. As always, modify based on your gut and what works for you on a low FODMAP diet.
- Fresh Basil: According to Monash University, fresh basil is low FODMAP in servings up to 1 cup (approximately 16 grams).
- Walnuts: Walnuts are low FODMAP at a serving size of 10 halves (or 30 grams). This recipe stays within that limit when divided into portions, providing healthy fats and a creamy texture without triggering symptoms.
- Garlic-infused olive oil: Garlic-infused oil is FODMAP-safe because fructans (the FODMAP compound in garlic) are not fat-soluble.
- Parmesan cheese: Parmesan is a hard, aged cheese that is naturally low in lactose. Monash has tested it as low FODMAP in servings of up to 40 grams.
- Lemon Juice: Fresh lemon juice is low FODMAP. It adds acidity and brightness without contributing to FODMAP load.
- Salt and Black Pepper: Neither salt nor pepper contains FODMAPs, and both can be used freely to enhance flavor.
For additional information on a low FODMAP diet, please visit Monash University or FODMAP Friendly. Both have websites and apps for additional guidance and testing results.
What To Serve Pesto With
This low FODMAP pesto isn't just for pasta (though it's amazing there). Here are a few easy ways to use it:
- Spread on a BLT with cottage bacon instead of mayo.
- Use as a base for low FODMAP pizza crust with your favorite toppings.
- Drizzle over yogurt marinated grilled Greek chicken, shrimp, or salmon.
- Create a creamy pesto sauce for gluten free chicken pesto pasta meal.
More Loveable Sauce Recipes
If you're into bold flavors that play nice with your gut, don't stop at pesto. Here are a few more low FODMAP sauces worth bookmarking:
- This creamy Low FODMAP Alfredo Sauce is perfect for pasta night - rich, cozy, and weeknight easy.
- Need something for taco night or nachos? Try this melty, flavor-packed Low FODMAP Queso.
- And if ranch dressing is basically your love language, this Low FODMAP Ranch checks all the boxes: creamy, herby, and totally dip-worthy.
Love This Recipe?
Leave a ⭐⭐⭐⭐⭐ rating + comment. It helps so much, and we love hearing from everyone! Thank You -Venessa
Recipe
Low FODMAP Pesto
Equipment
Ingredients
- 1 cup fresh basil leaves packed
- ¼ cup walnuts (Note 1)
- 2 tablespoons lemon juice fresh is best
- ½ cup garlic-infused olive oil
- ¼ cup freshly grated parmesan cheese (Note 2)
- ¼ teaspoon sea salt
- freshly ground black pepper to taste
Instructions
- Add the basil, walnuts, lemon juice, salt, and pepper to a large food processor. Scrape down the sides a couple of times.
- Pulse until everything is finely chopped and evenly combined with no big pieces remaining.
- With the processor running, slowly drizzle in the garlic-infused olive oil until the mixture turns smooth and spreadable.
- Stir in the grated parmesan cheese by hand to keep the texture just right.
- Serve immediately, or store in an airtight container in the fridge for up to 1 week. Pesto also freezes well in small portions for quick meals later.
Venessa Mandelkow says
I have missed pesto for way too long! Now I cannot stop making it. It is so good!